Preview Transform does nothing when selected
System Info: VS2015 Latest SlowCheetah as of 7/11/2017
Symptoms When selecting the menu option 'Preview Transform', against a config transform file in my project, nothing happens. No code diff window appears, no error message is shown. It silently fails.
Is there a source where exceptions thrown by Slowcheetah are stored?
I imagine it is failing to match the transform file to an applicable transform target. Can you share the names of the two files and entries in your project file that point to those 2 files?
Are you sure it's not erroring out a publish?
FYI, I had a similar issue, but I had to use the 2nd "Preview Transform" option in the context menu in order for it to try and show a preview.

The v2.5.48 release notes indicate that you have to manually uninstall the old version of SlowCheetah.
Would not uninstalling the old version cause the issue where you'd see two "Preview Transform" menu items?
This is probably the same issue as #98. @xantari @bryanparke are the transforms associated with non-build configurations?