I have a report template that I edited using report builder (probably 10.1). I installed Quant 10.1 which also updated report builder to 10.2. I think.
The error is
'Cannot activate designer
Anyway whether this is the cause or not I can no longer edit the template and I NEED to. It has been a while since I last edited am I doing something stupid? I am attaching the template file.
Update: also have the same problem with all versions of report builder I can find.