diff --git a/plugins/com.minres.scviewer.database.fst/src/com/minres/scviewer/database/fst/FstFileParser.java b/plugins/com.minres.scviewer.database.fst/src/com/minres/scviewer/database/fst/FstFileParser.java
index 68e56c1..1166f82 100644
--- a/plugins/com.minres.scviewer.database.fst/src/com/minres/scviewer/database/fst/FstFileParser.java
+++ b/plugins/com.minres.scviewer.database.fst/src/com/minres/scviewer/database/fst/FstFileParser.java
@@ -78,6 +78,7 @@ class FstFileParser {
 	}
 
 	public void getValueChanges(final int id, final int width, int timeScale, final EventList values) {
+		FstLibrary.fstReaderClrFacProcessMaskAll(fst);
 		FstLibrary.fstReaderSetFacProcessMask(fst, id);
 		FstLibrary.iterateValueChanges(fst, new ValueChangeCallback() {
 			@Override
diff --git a/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/messages.properties b/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/messages.properties
index f231ead..68e62b7 100644
--- a/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/messages.properties
+++ b/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/messages.properties
@@ -9,7 +9,7 @@ DesignBrowser_8=Insert before
 LoadingWaveformDb_0=Database loading...
 LoadStoreSettingsHandler_2=*.scview
 LoadStoreSettingsHandler_3=SCViewer.scview
-OpenHandler_0=*.vcd;*.vcd.gz;*.txlog;*.txlog.gz;*.txdb;*.fbrdb;*.ftr
+OpenHandler_0=*.vcd;*.vcd.gz;*.txlog;*.txlog.gz;*.txdb;*.fbrdb;*.ftr;*.fst
 QuitHandler_0=Confirmation
 QuitHandler_1=Do you want to exit?
 RelationTypeToolControl_0=------------