Random Illegal Operation error when moving between records

[JumpinJimRivers]

I get a random Illegal Operation Error for kernel32.dll when I toggle between records on my form, and I don't know why! The form is unique in that it has 3 continuous subforms with only one of them linked directly to the main form, one linked to another subform and the other linked to both the main form and the subform. So this may be the problem, but why isn't it always giving me the error message instead of every now and then? I've tested it using different record scenarios and I just don't see a pattern. Can anybody help?

Thanks
Blaine

 

[VBslammer]

I've had similar problems when trying to use SetFocus() or DoCmd.GotoControl in ways Access didn't like. Just a guess.
VBSlammer