diff --git a/lib/macintosh/cogtoolstart b/lib/macintosh/cogtoolstart
index ba2de7ba..01add7cb 100755
--- a/lib/macintosh/cogtoolstart
+++ b/lib/macintosh/cogtoolstart
@@ -11,4 +11,4 @@ JAVAROOT="$RESDIR/Java"
cd "$RESDIR"
-exec $JAVACMD -XstartOnFirstThread -classpath "$JAVAROOT/CogTool.jar:$JAVAROOT/MacSupport.jar:$JAVAROOT/WindowsImageTransfer.jar:$JAVAROOT/commons-collections-3.1.jar:$JAVAROOT/commons-lang-2.1.jar:$JAVAROOT/ecf.jar:$JAVAROOT/js.jar:$JAVAROOT/draw2d.jar:$JAVAROOT/swt.jar:$JAVAROOT/xercesImpl.jar:$JAVAROOT/xml-apis.jar:$JAVAROOT/MozillaGlue.jar:$JAVAROOT/MozillaInterfaces.jar:$JAVAROOT/jopt-simple.jar:$BASEDIR" -Djava.library.path="$JAVAROOT/dll" -Dcogtool.version="$BLDVER" -Dcogtool.revision="$BLDREV" -Dcogtool.build="$BLDTIM" -Xmx400000000 edu.cmu.cs.hcii.cogtool.CogTool $*
+exec $JAVACMD -XstartOnFirstThread -classpath "$JAVAROOT/CogTool.jar:$JAVAROOT/MacSupport.jar:$JAVAROOT/WindowsImageTransfer.jar:$JAVAROOT/commons-collections-3.1.jar:$JAVAROOT/commons-lang-2.1.jar:$JAVAROOT/ecf.jar:$JAVAROOT/js.jar:$JAVAROOT/draw2d.jar:$JAVAROOT/swt.jar:$JAVAROOT/xercesImpl.jar:$JAVAROOT/xml-apis.jar:$JAVAROOT/MozillaGlue.jar:$JAVAROOT/MozillaInterfaces.jar:$JAVAROOT/jopt-simple.jar:$BASEDIR" -Djava.library.path="$JAVAROOT/dll" -Dcogtool.version="$BLDVER" -Dcogtool.revision="$BLDREV" -Dcogtool.build="$BLDTIM" -Xmx400000000 edu.cmu.cs.hcii.cogtool.CogTool "$@"
diff --git a/res/CogTool.tmp/Contents/Info.plist b/res/CogTool.tmp/Contents/Info.plist
index bf48c3c8..8048cad1 100644
--- a/res/CogTool.tmp/Contents/Info.plist
+++ b/res/CogTool.tmp/Contents/Info.plist
@@ -22,6 +22,21 @@
CgTl
CFBundleVersion
VERSTRING
+ CFBundleDocumentTypes
+
+
+ CFBundleTypeExtensions
+
+ cgt
+
+ CFBundleTypeName
+ CogTool Project
+ CFBundleTypeRole
+ Editor
+ NSDocumentClass
+ CogTool.Document
+
+
LSEnvironment
BLDREV