If I right click on Pandora in Universal Apps and select uninstall from the popup menu, I get a window that says:
Program's exact name: Stardock Modern Mix
Full path to program's file or folder: C:\Program Files (x86)\Stardock\Start10\Launch.exe
Found 1 Program: "C:\Program Files (x86)\Stardock\Start10\uninstall.exe" "/U:C:\Program Files (x86)\Stardock\Start10\uninstall\uninstall.xml"
This looks to me like it will uninstall Start10...
Note: the properties for the Pandora app says target location is Start10 and the target is
"C:\Program Files (x86)\Stardock\Start10\Launch.exe" /PandoraMediaInc.29680B314EFC2_n619g4d5j0fnw!App
When I installed Start10, there was some message about modifying a database (or something like that). Did this change the apps to shortcuts that go through launch.exe?
Richard M