Scripts not found

 From:  Matadem
10787.1 
Good day.

Sometimes when I open projects I get the message the the plug ins are not found or installed.

So I save the item that I am working on and open it in a new Moi and then it works...
at one point I installed Moiv5 to try it out and deleted it, I am using v4.
Also was using v3 before the upgrade.

Any way I can fix this?

Thank you!