VS 2012 Ultimate
Version 11.0.61030.00 Update 4
I have tried the suggestions to clean, exit VS 2012 and delete obj/bin folders ... this did not solve the issue.
After remove the offending Telerik references in my XAML source the designer was able to load my page/control. However I now get another error in your Telerik.ReportViewer.Silverlight.xaml file:
The specified value cannot be assigned to the collection. The following type was expected: "Inline".
The offending codes is:
It looks to me like having the "!"
is not valid.
Is there an easy way to down grade from Q1 2014 back to Q1 2013 for both UI controls and reporting? Clearly what Telerik have released in Q1 2014 is NOT ready for professional use.