I found a solution about 404 on questions. Did the permalink settings thing that i found in this topic and worked like a charm! Now i can see all the questions.
But I’m still having the same problem when i’m trying to submit a question
The question is been published but the screen goes blank (or gives an internal server error on i.e.) Same thing happens when i try to answer a question too.
It seems like you won’t have to be in trouble. I fixed and it was pretty simple.
I turned on wp debug an saw that when i was trying to submit a question or an answer i was getting a fatal error like this:
Fatal error: Call to undefined function bp_blogs_record_activity()
I did a little search on your site an found that i had to turn site tracking on in buddypress.
So simple as that. Problem solved for me but thanks once again for your will to help!
p.s. Sorry in advance for the offtopic but i’ve already translate the front-end of your plugin for my site in greek. I think there is no other available translation in Greek so if you are intrested for it let me know to continue tranlate the back-end as well when i find some time and also where and who to contact with.