DAE -2 Plug-in inactive

[Buzzhound]

I am having problems opening a PT session that has a Reason session with it. When I create the session they work fine together. I save them and try to reopen the session and I get a error message that says:
Missing or Inactive plug in
Track "Audio 1" Insert 1 ("Reason Adapted for Digidesign") has been made Inactive because a DAE error was encountered (error #-2).

I checked it out in the answerbase and it said I should create the session from the applications folder. My session was on the desktop so I started to create sessions from my application folder. Same message appears.

Thanks for any suggestions!!

Merry Chrsimas