Attachments problem after upgrade
 

Hello guys :)

I have uploaded the forum at 3.8.4 and in fact I am not 100% sure if the problem I have was present before or after the upgrade.

Some users could upload attachments in their posts, some not.
As admn, I can attach and some of my staff but many others don't. I looked into the usergroups permissions and all members have the permission to attach and don't know what to do. These settings were unchanged from years and it was OK all the time just recently I have this problem.

I registered a "testuser" and when I try to attach a small zip file, I get:
Upload Errors testsong.zip:
Upload of file failed.

any advice please?