Error log is NUTS Error for avatar Line 3700

[showngo]

I am getting hammered with Errors for "forum/Sources/Subs.php
Line: 3700'

I changed a theme to a Currently supported theme.  Prince of darkness, and I even tried changing back but Ill get 50000 errors just over night. 

Any clue about the line 3700 ?
$path = $modSettings['attachmentUploadDir'][$dir];

Thanks   Im going nuts./

Tony

[Kindred]

What is the ACTUAL error message?

And themes are not relevant to errors in sources files

[showngo]

http://www.XXXXXdotcom/forum/index.php?action=dlattach;attach=241887;type=avatar
Undefined offset: 6
File: /home/FORUM/public_html/forum/Sources/Subs.php
Line: 3700

I removed the .com , it wanted to do a live link, Im not sure on the rules for that

[Illori]

are you actually using SMF 2.1?

[Arantor]

Did you set up multiple attachment folders?

[showngo]

Im using 2.0.13
I have multiple folders.     

I ended up created a new forum, Copied the DB and transferred the attachment folders over and it all works,.   Guess I will just Axe'd the old forum.  I already did the IP direct for the new one.

[Colin]

Tracking...

https://github.com/SimpleMachines/SMF2.1/pull/4033