diff --git a/Core/nbproject/project.xml b/Core/nbproject/project.xml
index 2e0bf14ac4..463e1c1903 100644
--- a/Core/nbproject/project.xml
+++ b/Core/nbproject/project.xml
@@ -177,7 +177,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>3</release-version>
-                        <specification-version>1.1</specification-version>
+                        <specification-version>1.0</specification-version>
                     </run-dependency>
                 </dependency>
             </module-dependencies>
diff --git a/Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerMedia.java b/Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerMedia.java
index e3ea57d314..b5c560d082 100644
--- a/Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerMedia.java
+++ b/Core/src/org/sleuthkit/autopsy/corecomponents/DataContentViewerMedia.java
@@ -217,33 +217,7 @@ public class DataContentViewerMedia extends javax.swing.JPanel implements DataCo
      * @return True if an image file that can be displayed
      */
     private boolean isImageSupported(AbstractFile file) {
-        String name = file.getNameExtension();
-
-        // blackboard
-        try {
-            String mimeType = new FileTypeDetector().getFileType(file);
-            if (nonNull(mimeType)) {
-                return imageMimes.contains(mimeType);
-            }
-        } catch (FileTypeDetector.FileTypeDetectorInitException | TskCoreException ex) {
-            logger.log(Level.WARNING, "Failed to look up mimetype for " + file.getName() + " using FileTypeDetector.  Fallingback on AbstractFile.isMimeType", ex);
-            if (!imageMimes.isEmpty()) {
-                MimeMatchEnum mimeMatch = file.isMimeType(imageMimes);
-                if (mimeMatch == MimeMatchEnum.TRUE) {
-                    return true;
-                } else if (mimeMatch == MimeMatchEnum.FALSE) {
-                    return false;
-                }
-            }
-        }
-
-        // extension
-        if (imageExtensions.contains("." + name)) {
-            return true;
-        }
-
-        // our own signature checks for important types
-        return ImageUtils.isJpegFileHeader(file) || ImageUtils.isPngFileHeader(file);
+        return ImageUtils.thumbnailSupported(file);
     }
 
     @Override
diff --git a/Core/src/org/sleuthkit/autopsy/corecomponents/MediaViewImagePanel.java b/Core/src/org/sleuthkit/autopsy/corecomponents/MediaViewImagePanel.java
index 73fdac25f1..cf89c28180 100644
--- a/Core/src/org/sleuthkit/autopsy/corecomponents/MediaViewImagePanel.java
+++ b/Core/src/org/sleuthkit/autopsy/corecomponents/MediaViewImagePanel.java
@@ -18,6 +18,7 @@
  */
 package org.sleuthkit.autopsy.corecomponents;
 
+import com.google.common.collect.Lists;
 import java.awt.Dimension;
 import java.awt.EventQueue;
 import java.awt.image.BufferedImage;
@@ -25,9 +26,9 @@ import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.SortedSet;
 import java.util.logging.Level;
 import javafx.application.Platform;
 import javafx.embed.swing.JFXPanel;
@@ -45,6 +46,7 @@ import javax.swing.JPanel;
 import javax.swing.SwingUtilities;
 import org.openide.util.NbBundle;
 import org.sleuthkit.autopsy.casemodule.Case;
+import org.sleuthkit.autopsy.coreutils.ImageUtils;
 import org.sleuthkit.autopsy.coreutils.Logger;
 import org.sleuthkit.autopsy.coreutils.MessageNotifyUtil;
 import org.sleuthkit.autopsy.coreutils.ThreadConfined;
@@ -69,7 +71,8 @@ public class MediaViewImagePanel extends JPanel {
      * mime types we shoul dbe able to display. if the mimetype is unknown we
      * will fall back on extension (and jpg/png header
      */
-    static private final List<String> supportedMimes = new ArrayList<>();
+    static private final SortedSet<String> supportedMimes = ImageUtils.getSupportedMimeTypes();
+
     /**
      * extensions we should be able to display
      */
@@ -84,8 +87,6 @@ public class MediaViewImagePanel extends JPanel {
         for (String suffix : ImageIO.getReaderFileSuffixes()) {
             supportedExtensions.add("." + suffix);
         }
-        supportedMimes.addAll(Arrays.asList(ImageIO.getReaderMIMETypes()));
-        supportedMimes.add("image/x-ms-bmp"); //NON-NLS)
     }
 
     /**
@@ -195,7 +196,7 @@ public class MediaViewImagePanel extends JPanel {
      * @return supported mime types
      */
     public List<String> getMimeTypes() {
-        return Collections.unmodifiableList(supportedMimes);
+        return Collections.unmodifiableList(Lists.newArrayList(supportedMimes));
     }
 
     /**
diff --git a/Core/src/org/sleuthkit/autopsy/coreutils/ImageUtils.java b/Core/src/org/sleuthkit/autopsy/coreutils/ImageUtils.java
index 406ada920d..7db63ceaef 100755
--- a/Core/src/org/sleuthkit/autopsy/coreutils/ImageUtils.java
+++ b/Core/src/org/sleuthkit/autopsy/coreutils/ImageUtils.java
@@ -2,7 +2,7 @@
  *
  * Autopsy Forensic Browser
  * 
- * Copyright 2012 Basis Technology Corp.
+ * Copyright 2012-15 Basis Technology Corp.
  * 
  * Copyright 2012 42six Solutions.
  * Contact: aebadirad <at> 42six <dot> com
@@ -30,11 +30,13 @@ import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Paths;
-import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 import static java.util.Objects.isNull;
+import java.util.SortedSet;
+import java.util.TreeSet;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
 import java.util.logging.Level;
@@ -53,20 +55,31 @@ import org.sleuthkit.datamodel.ReadContentInputStream;
 import org.sleuthkit.datamodel.TskCoreException;
 
 /**
- * Utilities for creating and manipulating thumbnail and icon images.
+ * Utilities for working with Images and creating thumbnails. Reuses thumbnails
+ * by storing them in the case's cache directory.
  */
 public class ImageUtils {
 
+    private static final Logger LOGGER = Logger.getLogger(ImageUtils.class.getName());
     /** save thumbnails to disk as this format */
     private static final String FORMAT = "png";
 
     public static final int ICON_SIZE_SMALL = 50;
     public static final int ICON_SIZE_MEDIUM = 100;
     public static final int ICON_SIZE_LARGE = 200;
-    private static final Logger LOGGER = Logger.getLogger(ImageUtils.class.getName());
+
     private static final Image DEFAULT_ICON = new ImageIcon("/org/sleuthkit/autopsy/images/file-icon.png").getImage(); //NON-NLS
+
     private static final List<String> SUPP_EXTENSIONS = Arrays.asList(ImageIO.getReaderFileSuffixes());
-    private static final List<String> SUPP_MIME_TYPES = new ArrayList<>(Arrays.asList(ImageIO.getReaderMIMETypes()));
+
+    public static List<String> getSupportedExtensions() {
+        return SUPP_EXTENSIONS;
+    }
+
+    public static SortedSet<String> getSupportedMimeTypes() {
+        return Collections.unmodifiableSortedSet(SUPP_MIME_TYPES);
+    }
+    private static final TreeSet<String> SUPP_MIME_TYPES = new TreeSet<>(Arrays.asList(ImageIO.getReaderMIMETypes()));
 
     /** thread that saves generated thumbnails to disk for use later */
     private static final Executor imageSaver = Executors.newSingleThreadExecutor(new BasicThreadFactory.Builder().namingPattern("icon saver-%d").build());
@@ -107,7 +120,16 @@ public class ImageUtils {
                 return SUPP_MIME_TYPES.contains(mimeType);
             }
         } catch (FileTypeDetector.FileTypeDetectorInitException | TskCoreException ex) {
-            LOGGER.log(Level.WARNING, "Error while getting file signature from blackboard.", ex); //NON-NLS
+
+            LOGGER.log(Level.WARNING, "Failed to look up mimetype for " + file.getName() + " using FileTypeDetector.  Fallingback on AbstractFile.isMimeType", ex);
+            if (!SUPP_MIME_TYPES.isEmpty()) {
+                AbstractFile.MimeMatchEnum mimeMatch = file.isMimeType(SUPP_MIME_TYPES);
+                if (mimeMatch == AbstractFile.MimeMatchEnum.TRUE) {
+                    return true;
+                } else if (mimeMatch == AbstractFile.MimeMatchEnum.FALSE) {
+                    return false;
+                }
+            }
         }
 
         // if we have an extension, check it
diff --git a/ImageGallery/nbproject/project.xml b/ImageGallery/nbproject/project.xml
index 2a28ce3deb..ab6cd75280 100644
--- a/ImageGallery/nbproject/project.xml
+++ b/ImageGallery/nbproject/project.xml
@@ -4,7 +4,7 @@
     <configuration>
         <data xmlns="http://www.netbeans.org/ns/nb-module-project/3">
             <code-name-base>org.sleuthkit.autopsy.imagegallery</code-name-base>
-            <suite-component/>
+            <standalone/>
             <module-dependencies>
                 <dependency>
                     <code-name-base>org.netbeans.api.progress</code-name-base>
diff --git a/branding/core/core.jar/org/netbeans/core/startup/Bundle.properties b/branding/core/core.jar/org/netbeans/core/startup/Bundle.properties
index fa4b5fa2cd..09b8822c3f 100644
--- a/branding/core/core.jar/org/netbeans/core/startup/Bundle.properties
+++ b/branding/core/core.jar/org/netbeans/core/startup/Bundle.properties
@@ -1,5 +1,5 @@
 #Updated by build script
-#Thu, 09 Jul 2015 12:49:41 -0400
+#Wed, 15 Apr 2015 18:11:08 -0400
 LBL_splash_window_title=Starting Autopsy
 SPLASH_HEIGHT=314
 SPLASH_WIDTH=538
@@ -8,4 +8,4 @@ SplashRunningTextBounds=0,289,538,18
 SplashRunningTextColor=0x0
 SplashRunningTextFontSize=19
 
-currentVersion=Autopsy 3.1.3
+currentVersion=Autopsy 3.1.2
diff --git a/branding/modules/org-netbeans-core-windows.jar/org/netbeans/core/windows/view/ui/Bundle.properties b/branding/modules/org-netbeans-core-windows.jar/org/netbeans/core/windows/view/ui/Bundle.properties
index 33f711d800..4bfb72271d 100644
--- a/branding/modules/org-netbeans-core-windows.jar/org/netbeans/core/windows/view/ui/Bundle.properties
+++ b/branding/modules/org-netbeans-core-windows.jar/org/netbeans/core/windows/view/ui/Bundle.properties
@@ -1,5 +1,5 @@
 #Updated by build script
-#Thu, 09 Jul 2015 12:49:41 -0400
+#Wed, 15 Apr 2015 18:11:08 -0400
 
-CTL_MainWindow_Title=Autopsy 3.1.3
-CTL_MainWindow_Title_No_Project=Autopsy 3.1.3
+CTL_MainWindow_Title=Autopsy 3.1.2
+CTL_MainWindow_Title_No_Project=Autopsy 3.1.2
diff --git a/nbproject/platform.properties b/nbproject/platform.properties
index 4cfc404047..1554e42acf 100644
--- a/nbproject/platform.properties
+++ b/nbproject/platform.properties
@@ -1,5 +1,4 @@
 branding.token=autopsy
-nbjdk.active=JDK_1.8_45_x64
 # Version of platform that is automatically downloaded
 # Note build.xml has similar definitions that should be kept in sync (manually)
 netbeans-plat-version=7.3.1
@@ -14,43 +13,111 @@ cluster.path=\
     ${nbplatform.active.dir}/java:\
     ${nbplatform.active.dir}/platform
 disabled.modules=\
-    org.jdesktop.layout,\
-    org.netbeans.api.search,\
-    org.netbeans.core.execution,\
-    org.netbeans.core.io.ui,\
-    org.netbeans.core.nativeaccess,\
-    org.netbeans.core.netigso,\
-    org.netbeans.core.osgi,\
-    org.netbeans.core.ui,\
-    org.netbeans.libs.felix,\
-    org.netbeans.libs.jna,\
-    org.netbeans.libs.jsr223,\
-    org.netbeans.libs.osgi,\
-    org.netbeans.libs.testng,\
-    org.netbeans.modules.applemenu,\
-    org.netbeans.modules.autoupdate.cli,\
-    org.netbeans.modules.autoupdate.services,\
-    org.netbeans.modules.autoupdate.ui,\
-    org.netbeans.modules.core.kit,\
-    org.netbeans.modules.editor.mimelookup.impl,\
-    org.netbeans.modules.favorites,\
-    org.netbeans.modules.javahelp,\
-    org.netbeans.modules.jellytools.java,\
+    org.apache.tools.ant.module,\
+    org.netbeans.api.debugger.jpda,\
+    org.netbeans.api.java,\
+    org.netbeans.lib.nbjavac,\
+    org.netbeans.libs.cglib,\
+    org.netbeans.libs.javacapi,\
+    org.netbeans.libs.javacimpl,\
+    org.netbeans.libs.springframework,\
+    org.netbeans.modules.ant.browsetask,\
+    org.netbeans.modules.ant.debugger,\
+    org.netbeans.modules.ant.freeform,\
+    org.netbeans.modules.ant.grammar,\
+    org.netbeans.modules.ant.kit,\
+    org.netbeans.modules.beans,\
+    org.netbeans.modules.classfile,\
+    org.netbeans.modules.dbschema,\
+    org.netbeans.modules.debugger.jpda,\
+    org.netbeans.modules.debugger.jpda.ant,\
+    org.netbeans.modules.debugger.jpda.kit,\
+    org.netbeans.modules.debugger.jpda.projects,\
+    org.netbeans.modules.debugger.jpda.ui,\
+    org.netbeans.modules.debugger.jpda.visual,\
+    org.netbeans.modules.findbugs.installer,\
+    org.netbeans.modules.form,\
+    org.netbeans.modules.form.binding,\
+    org.netbeans.modules.form.j2ee,\
+    org.netbeans.modules.form.kit,\
+    org.netbeans.modules.form.nb,\
+    org.netbeans.modules.form.refactoring,\
+    org.netbeans.modules.hibernate,\
+    org.netbeans.modules.hibernatelib,\
+    org.netbeans.modules.hudson.ant,\
+    org.netbeans.modules.hudson.maven,\
+    org.netbeans.modules.i18n,\
+    org.netbeans.modules.i18n.form,\
+    org.netbeans.modules.j2ee.core.utilities,\
+    org.netbeans.modules.j2ee.eclipselink,\
+    org.netbeans.modules.j2ee.eclipselinkmodelgen,\
+    org.netbeans.modules.j2ee.jpa.refactoring,\
+    org.netbeans.modules.j2ee.jpa.verification,\
+    org.netbeans.modules.j2ee.metadata,\
+    org.netbeans.modules.j2ee.metadata.model.support,\
+    org.netbeans.modules.j2ee.persistence,\
+    org.netbeans.modules.j2ee.persistence.kit,\
+    org.netbeans.modules.j2ee.persistenceapi,\
+    org.netbeans.modules.java.api.common,\
+    org.netbeans.modules.java.debug,\
+    org.netbeans.modules.java.editor,\
+    org.netbeans.modules.java.editor.lib,\
+    org.netbeans.modules.java.examples,\
+    org.netbeans.modules.java.freeform,\
+    org.netbeans.modules.java.guards,\
+    org.netbeans.modules.java.helpset,\
+    org.netbeans.modules.java.hints,\
+    org.netbeans.modules.java.hints.declarative,\
+    org.netbeans.modules.java.hints.declarative.test,\
+    org.netbeans.modules.java.hints.legacy.spi,\
+    org.netbeans.modules.java.hints.test,\
+    org.netbeans.modules.java.hints.ui,\
+    org.netbeans.modules.java.j2seplatform,\
+    org.netbeans.modules.java.j2seproject,\
+    org.netbeans.modules.java.kit,\
+    org.netbeans.modules.java.lexer,\
+    org.netbeans.modules.java.navigation,\
+    org.netbeans.modules.java.platform,\
+    org.netbeans.modules.java.preprocessorbridge,\
+    org.netbeans.modules.java.project,\
+    org.netbeans.modules.java.source,\
+    org.netbeans.modules.java.source.ant,\
+    org.netbeans.modules.java.source.queries,\
+    org.netbeans.modules.java.source.queriesimpl,\
+    org.netbeans.modules.java.sourceui,\
+    org.netbeans.modules.java.testrunner,\
+    org.netbeans.modules.javadoc,\
+    org.netbeans.modules.javawebstart,\
     org.netbeans.modules.junit,\
-    org.netbeans.modules.junitlib,\
-    org.netbeans.modules.keyring.impl,\
-    org.netbeans.modules.masterfs,\
-    org.netbeans.modules.masterfs.linux,\
-    org.netbeans.modules.masterfs.macosx,\
-    org.netbeans.modules.masterfs.solaris,\
-    org.netbeans.modules.masterfs.windows,\
-    org.netbeans.modules.netbinox,\
-    org.netbeans.modules.print,\
-    org.netbeans.modules.progress.ui,\
-    org.netbeans.modules.spi.actions,\
-    org.netbeans.modules.whitelist,\
-    org.openide.compat,\
-    org.openide.execution,\
-    org.openide.options,\
-    org.openide.util.enumerations
+    org.netbeans.modules.maven,\
+    org.netbeans.modules.maven.checkstyle,\
+    org.netbeans.modules.maven.coverage,\
+    org.netbeans.modules.maven.embedder,\
+    org.netbeans.modules.maven.grammar,\
+    org.netbeans.modules.maven.graph,\
+    org.netbeans.modules.maven.hints,\
+    org.netbeans.modules.maven.indexer,\
+    org.netbeans.modules.maven.junit,\
+    org.netbeans.modules.maven.kit,\
+    org.netbeans.modules.maven.model,\
+    org.netbeans.modules.maven.osgi,\
+    org.netbeans.modules.maven.persistence,\
+    org.netbeans.modules.maven.refactoring,\
+    org.netbeans.modules.maven.repository,\
+    org.netbeans.modules.maven.search,\
+    org.netbeans.modules.maven.spring,\
+    org.netbeans.modules.projectimport.eclipse.core,\
+    org.netbeans.modules.projectimport.eclipse.j2se,\
+    org.netbeans.modules.refactoring.java,\
+    org.netbeans.modules.spellchecker.bindings.java,\
+    org.netbeans.modules.spring.beans,\
+    org.netbeans.modules.testng,\
+    org.netbeans.modules.testng.ant,\
+    org.netbeans.modules.testng.maven,\
+    org.netbeans.modules.websvc.jaxws21,\
+    org.netbeans.modules.websvc.jaxws21api,\
+    org.netbeans.modules.websvc.saas.codegen.java,\
+    org.netbeans.modules.xml.jaxb,\
+    org.netbeans.modules.xml.tools.java,\
+    org.netbeans.spi.java.hints
 
diff --git a/nbproject/project.properties b/nbproject/project.properties
index f80c2ec8a8..d46c65d75a 100644
--- a/nbproject/project.properties
+++ b/nbproject/project.properties
@@ -10,7 +10,6 @@ app.version=3.1.3
 #build.type=RELEASE
 build.type=DEVELOPMENT
 
-project.org.sleuthkit.autopsy.imagegallery=ImageGallery
 update_versions=false
 #custom JVM options
 #Note: can be higher on 64 bit systems, should be in sync with build.xml
@@ -28,8 +27,7 @@ modules=\
     ${project.org.sleuthkit.autopsy.testing}:\
     ${project.org.sleuthkit.autopsy.thunderbirdparser}:\
     ${project.org.sleuthkit.autopsy.core}:\
-    ${project.org.sleuthkit.autopsy.corelibs}:\
-    ${project.org.sleuthkit.autopsy.imagegallery}
+    ${project.org.sleuthkit.autopsy.corelibs}
 project.org.sleuthkit.autopsy.core=Core
 project.org.sleuthkit.autopsy.corelibs=CoreLibs
 project.org.sleuthkit.autopsy.keywordsearch=KeywordSearch