I've experimented with release 1.4.5 and found two issues:
1) Worksheet references. If I try to reference data in a particular field of another worksheet by entering something like SheetName!C1, then all I get is #REF. In other words, cross-worksheet references don't seem to be working. They worked in release 1.4.4, but there were some problems with saving cross-worksheet references (see one of my previous posts).
2) Saving data in multi-sheet documents when EnableSession="False". When I go to any non-default sheet, enter some data, then press "Save", the text gets written to the default sheet. In release 1.4.4, I was able to use a viewstate variable that was initialized in the SheetTabClick handler and then was used to reset ActiveSheetIndex on Page_Load. This technique, for some reason, no longer works in release 1.4.5.
Could you tell me how I could use cross-worksheet references and work with multisheet documents (EnableSession=False) in version 1.4.5.