I ported the program to Delphi XE5 with a clean install ans the problem was gone.
Is it possible that in XE3 there where leftovers from a previous install?

BTW your suggestion did not solved the problem.

I now go with XE5, so no problem.

Greetings
Henk

Hello, After I installed the latest VCL in Delphi XE3 and compiled en run an older program I get an error message when I open the form with a TChart on it (see attachment) When I remove the TChart the form gives no problem. When I put a TChart again on it the problem is back again. Can you help me? ...