Course Plug In craches my whole multi network wordpress site?

Hallo

I am having trouble with the course press pro plug in. I have when I install it and network activate it show a red error message, it does not give any details but it crashes my whole website. I the have to go into the plugins folder and delete the plugin and then my website i started up again.

Am I doing something wrong because all the other plugins work perfectly?

Thx