[turba] Turba claims not to be activated after upgrading to horde4

[Jens Pranaitis]

Hello everybody,
after upgrading horde3 to horde4 (I did a fresh install of horde4 with 
all the applications I used with horde3 and imported the old database). 
Turba stopped working - when I open the configuration page it claims 
"turba is not activated.". I'm running turba 3.0.5 and horde 4.0.8. The 
configfile for turba is attached as well as the backtrace I get when 
opening the page and entries from the horde logfile set to debug. Any 
help on debugging this problem would be really appreciated.

Kind Regards,
Jens Pranaitis
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