Hi again,
As we absolutely needed a forum, i had to completely uninstall the module and reinstall it.
It was working fine for the last 4 days, but i've got now the same problem, but had the feedback of a user who messed it up..
Here is how it happened :
1/He was writing a long answer to a thread.
2/He tried to post but a message told him he was disconnected.
3/He reconnected to validate his post
4/He got the following error message (french website) :
"Une erreur critique est survenue.
La valeur ne peut pas être null. Nom du paramètre : value"
(approximate translation : "A critical error happened. The value can't be null. Parameter name : value")
Right now, i can still see the forum groups, and the forums under each group.
When opening the forum where the thread is, we only see the one thread where he had the error. (there was another thread there)
When trying to open that thread, it is now empty (there was the initial post, an answer, then what he posted.)
Last time, it began like that before the "link problem" spread up over the whole forum module.