Thank you everyone who replied. Yes, I use classes on the pageframes. The form has 6 .dbfs and 3 views; almost 200 fields total on different pages. Guess it was getting too complex to add another page.

>Did you have a member class setup? If so, changing to a different class can cause this problem.
>
>>Hi all,
>>
>>I have the strangest problem. I was making a lot of changes on a form with pageframe and test it, it resulted in dreaded fatal error C0...5. I checked the log and there was no information. I started over again by deleting all FoxUser.*, recompiled .dbc, cleaned up, etc... and restored the old form. I made a change, saved it in backup, tested it, one at a time, to pinpoint the cause of the fatal error. All changes ran fine but then when I added a new page (PageCount was 6, changed it to 7), bam, fatal error! Just ONE simple change! A new page! I also tried This.Refresh() in the click method to no avail. Page 7 has nothing in it. For the life of me, I do not understand why adding a new page caused the fatal error.