When I add or edit a field in the subform (from within a main form) and try  to save the record (using the command tree), my changes are removed. Ie., the subform record is unchanged.

Strange.

This has never happened before, until now. The problem seems to be attached to a specific record in my application.  I have performed a search in Designer (preview mode), updated a field in the subform, moved to another element(whether it be another subform LE or a form LE) and i use "Save Record" under Navigation and my changes get wiped out.  Doesn't seem to matter where the cursor resides. I can send the app to Support if you're interested.

I've been experiencing several problems with Designer. Seems to crash for no reason.  I have sent in the app regarding this before.  Got a reply that it was a bug, but man, is it ever frustrating to continually reopen the app and redo your work when there is nothing wrong with your code or data.  When do you estimate v 1.0.2 will be out?

We understand that it's frustrating, and will certainly work to fix whatever crashes we can find. Knowing how to cause them is the key. It's very unlikely to be "random". If you are experiencing this, try to be aware of patterns that cause the crash. It's our best chance at tracking them down. Meanwhile, much of your frustration can be circumvented simply by saving your work periodically.