Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
To get started, I need to know what type of computer you're using.Windows XP, Widows Vista, Windows 7, Windows 8, Or a Mac.If it's a Mac, please check the OSX version as follows.Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.
Also, when you are trying to edit the collage, what program are you using specifically to make and edit the collages?
Thank you for your response,
and what program are you using specifically when you are creating and attempting to edit the collages?
Lets start with this repair.
Open your finder ( magnifying glass ) type in disk utility, and launch the disk utility application.On the left side of the disk utility window, click your mac hd, then at the lower right hand side, click repair permissions .
While that repair is running.. Let me know what happens if you control click on a collage inside picasa.. Will it let you edit it then? Or show you the edit option at least?
Also, was picasa allowing you to view and edit collages previously on this same mac?