I use the ETS version of FMP 15 since the very beginning and did not have many issues during that time.
yesterday FMPA 15 refused to start and a dialog told me that Java 6 is required for using it.
After installing Java 6 from the Apple-Lion-Site FMPA 15 did work again.
I now have only 1 new issue:
I am not able to upload a database to the FMServer (15)
after choosing the server in the share menu the fields for username and password appear but I am not able to enter these fields.
So I am not able to log in to the server.
After I failed with FMPA 15 I tried the same with FMPA 14 without a problem.