thank you for your answer.
It seems that my application is using the latest version of Reporting and UI for WPF, as you can see in the enclosed screen shot, that lists all the Telerik assemblies in my application.
I've make more tests against this problem:
- Reporting 10.0.16.113 and UI 2016.1.112: crash
- Reporting 9.2 15.1126 and UI 2016.1.112: crash
- Reporting 10.0.16.113 and UI 2015.3.1104: work.
- Reporting 22.214.171.1246 and UI 2015.3.1104: work
So it really seems that the problem is with the new version of UI for WPF...
I think that you have enough information now to duplicate the problem. If not, I can upload my application (in Oxygene), so you can try with it.