System.Core not found

Dec 4, 2008 at 10:14 AM
Edited Dec 4, 2008 at 12:46 PM


if I try to customize the choices of a choice property, I get an error that the assembly System.Core was not found.
The same happens when I try to delete an existing property.

Any idea where the problem appears and how I can solve it?

Thanks in advance.

Dec 4, 2008 at 12:48 PM

Problem solved, i had'nt thought about the .net framework.
After installing 3.5 it works.