Thanks for the info.
It looks like the unity version I'm using is not compatible with android 15. Normally that wouldn't be a problem as most operating systems tend to have some backwards compatibility. Seams they skipped that for 15.
I'm currently working on making it compatible with 14 and should have a build ready for that later today. That might work for you depending on how bad the backwards compatibility is, if not then you will have to wait a couple of days.
As updating the engine to a newer version. tends to cause a lot of errors and might take some time.