Check Illori's answer.
If you are able, back grade your PHP version to 5.4.xxx and see if you still get that...
Unfortunately still no attachments here, no errors either so not sure what's up with it really.Check two things for me:
Dougiefresh Hi!If you are thinking that the mod is supposed to automatically play the attachment, then you are mistaken. Is that the issue?
Unfortunately for me it does not work.
I'm using SMF 2.0.13
To ask for help.
Thanks in advance.
Otherwise, great job, thank you.,
Have a nice day!