Sorry to ask some silly questions, but;
- Have you tried restarting ArcMap?
- Can you still see them in the Create and Edit Favorites in the ArcFM Solution Toolbar in ArcCatalog? (if so, make a backup from here to an XML file just to be safe -- I would recommend doing this on a regular basis, in case of any user 'error').
- Can anyone else see them?
- Is the favorites pane just "black" (if so, I've had to re-install ArcMap/ArcFM before to get around this)
Sorry for late reply I tried most of those but it didnt work.
I figured out the cause of this problem.
I was grouping the data frame with other items in the layout view. This is the reason why I was getting the error. Maybe because ArcFM was trying to save the grouped data frame to the database which is not possible.
Keynote: do not group the data frame with other layout elements if you want to save them as ArcFM page templates.