Do you have a localized version of Visual Studio (e.g. a German version of it)? Currently we have a problem detecting that Visual Studio is installed when the version is other than the standard English version.
We've already fixed that and the fix will be available in the next JustMock build.
If you don't want to wait for the next version of JustMock you can open a separate support ticket and we'll send you an internal build in which the problem is fixed.
Sorry for the inconvenience.
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items.