Solved
Testcomplete 11 Testcases report unsupported version of the PatchServices library on TC12.10
We have activated a TC12.10 Testlicense Existing TC11.0 Testcases when run from TC12.10 report this Error: The tested application x.y.z uses an unsupported version of the PatchServices library....
Basically, you need to recompile your mobile application with a different library. Some things changed between TestComplete 11 and TestComplete 12 so if your application was compiled with the TC 11 library, it cannot be used with TC 12.
So... go through the instructions as linked (https://support.smartbear.com/testcomplete/docs/app-testing/mobile/android/preparing/instrumenting-apps/about.html) for your application using the new PatchServices.jar provided with your TC 12 installation.
