Error During Install : Cannot Modify Header Information

[kenji4861]

When I try to run the "Create Thumbs" in convert_vbgarage.php, I get

"Warning: Cannot modify header information - headers already sent by (output started at /home/spoofee/public_html/forums/includes/adminfunctions.php:223) in /admincp/convert_vbgarage.php on line 348"

I never touched adminfuntions, someone help me please. I'm coming from version 3.1.1

[Rick Sample]

I had this problem when I upgraded, but I'm not sure how I got around it, here is a thread for this, you may want to try some of the stuff in it: https://vborg.vbsupport.ru/showthread.php?t=76208

[kenji4861]

Yea, I searched previously and followed the two tips given in that thread

- getting rid of any spaces.
- replacing the code with "header" in it.

but no luck =(