I am suddenly getting the following compile-time error: "method or data member not found." VB is complaining about functions that have existed in the same class file for a long(!) time.

Thinking that there is some limitation on the symbol table size of a .cls file, I have moved several functions out of the class into a .bas file. Still the same error, although the error seems to move to different class function calls.

I know that the current function being labeled with the error is really there, but VB can't seem to find it.

Is there a fix for this?

How does the VB compiler know that the object defined will be a new class, anyway?

Not that it'll fix the problem, but try the following:

Make sure you have the following in the code (similar based on your case):

' If no events in the class
Dim ClassVariable as New Classname
' Else
Dim ClassVariable as Classname
Set ClassVariable = New Classname

' When no longer need the class
Set ClassVariable = Nothing


And if that doesn't work make sure all references to the project are loaded and exist (don't have a "Missing" next to them).

I've seen that cause a similar problem with simple built in functions like "Abs", "Rnd", or "Control.anything"