4.0 Serialization Error

[Shipwreck]

I have been running 4.0 for about 3 weeks with no real problems. Today I opened a part the had run before, and it had this error.
Serializtion Error
Error: ALT

anyone have any clue

the only thing I think that I have changed is the textonly.rpt templete
I deleted the one section for serialization... but all programs have been working just fine.. this part is the only one so far that is acting up

[JamesMannes]

Perhaps get rid of your probe file? Move it somewhere out of your probe file area and see if you can open up the program. Program may have become corrupted(especially if its' been hanging with seedy ladies and unsavory gentlemen).