Hello,
It seems that there is a bug in the RibbonTool class. NullReferenceException is raised when setting the Command property to null. Can you please fix it in the upcoming service release?
Thanks,
Gary
HI,
I was not able to reproduce your issue using the 12.1 release build.
I am attaching my sample, please feel free to modify it so that it replicates your issue.
Sincerely,
Matt, Developer Support Engineer
Hi Matt,
Please see attached.
Hi,
I was able to reproduce the issue and logged it to our development staff. It's already been fixed and it will be a part of the upcoming Service Release.
Thanks for reporting the issue!
Regards,
Please let me know if you need further assistance regarding this issue.
Sincerely, Matt Developer Support Engineer
The issue is resolved in the latest Service Release (build Silverlight.Nightly_12.1.20121.2003).
Updating to this SR should fix the issue.
Hope this helps,
Please let me know if you need further assistance.