I try to use MSComctlLib, and it is added to the vb6 project and also (I believe) correctly registered in windows.
When I compile, I am told that for MSComctlLib.tvwTreelinesPlusMinusPictureText the "variable is not defined" (I think it is MSComctlLib, as that one is highlighted by the compiler). What could be wrong and how to fix it?

It is some ancient (10 years) code I've inherited, and -yay!- those who made it are no longer in the house...