Joomla Website not working after installing SMF Bridge

[Franka]

Hi there,

I saw some really good results with the SMF so I installed it today and added the bridge to my joomla system.
But now my joomla website is not working anymore. Which means the first page is just blank.
The SMF is working though. I used the same database for both, just a different prefix (which might have been a mistake?!)

As all the data still seems to be there (the backend joomla interface is still working and all the DB tables are still there)
I guess its some configuration file or some DB initialization file that is wrong.

Please help me fix that, because I have really no idea and need to get on with it pretty soon!
Thanks!