Hi,

What can cause the above error when setting a property of an object?

I have a class derived from 'Container' with a property named 'IsValid' with an access method that simply returns T.
A second class is derived from this which overrides the IsValid_Access by returning 'This.IsValid'

In the InteractiveChange of a textbox in the class I have:

WITH THIS.Parent   &&(i.e the class instance)
  .IsValid = .T.
ENDWITH

The .IsValid=.T. line raises the 1734 error. If I suspend before the line executes the debugger shows the correct value for .IsValid

I don't see why the accessor code I've mentioned would be relevant since the line is question is assigning rather than accessing the property value but thought I'd mention it.
This is old code and ,AFAIK, worked OK in the past and no code changes have been made although it''s possible that the environment settings have changed (but I can't think of one that would affect this?)

Maybe this is something simple and I've just been away from VFP for too long?
Regards,
Viv