It seems likely that instead of
Settings > Apps > Google Play Services
you went to
Settings > Apps > DroidScript
and cleared the data
How much of a disaster that causes depends on a couple of things
1) Do you have a backup of your app's source?
2) What version of Android is running on your device?
3) When you say "tauchte gar nichts mehr in DS auf" is "Hello World" gone as well as your app?
If you reply with the answers to those 3 questions I will try to come up with a solution.
There will probably be more questions