I installed the 2 modules above. It works on a clean database. I want to use them on our production database which is not clean. After the installation on a copy of the DB I get a "recursion error" when I want to fill the timesheet on a timesheet or on the task. Also there is the same error when I create a new task in a project.

I uninstalled and installed a lot of modules to find the conflict, but I cant find the source of the problem. Could somebody please point me in the right direction?

Im searching for bad entries in different tables now, -> mail followers, accounts,... but no luck

Tests on travis are failing:

https://travis-ci.org/OCA/hr-timesheet 

Is this the reason and I have only to wait for a small update?