I use Elements 9 on my iMac (Snow Leopard) with no problems, since almost 2 years : program stable,
good performance. On my PC Vista, I encountered some drivers issues, and sometimes the program crashed.
Having migrated to Win 7 on a new laptop after mother board issue on the previous Vista, as of today I have not
I think you could check if there is specific issues with Lion or Mountain Lion with Elements 9, in this forum.
For your projects created with PREL, if you create them on a specific folder instead of the generic one created
at install, I think they could be found again after a re-install process.
Are you using Adobe Elements Premiere (Video) editing or Adobe Elements (Photo editing) on your imac?
I am using both, on my iMac, but mainly Premiere for video editing.
I use photoshop elements to make corrections to some of my photos, but I manage my images with iPhoto
on my Mac.
On my PC I use Elements Organizer for my photos management, or Picasa. And of course Premiere Elements
for video editing.
The projects you created in Windows Vista will open in Windows 7. However, projects created in Windows will not open on a Mac and projects created on a Mac will not open with the Windows version of the program.