Okey, from the start.
For no apparent reason, it just stopped working. I couldn't upload any pictures. So I updated from 1.3 to 1.4. Nothing changed, still got errors. So I started to browse the forum for answers.
I've chanced the chmod. I've changed the picmgmt.inc.php file. I've made sure I use GD2 (it is supported, I checked in the info.php).
Whatever I try, and believe me, I've been trying for 2 days now... reading, browsing, trying to find answers... I just can't fix it.
The only time I can upload images is if I use GD1, but then I get the well reported bad quality images on the thumbnails.
Here are some notes from the debug thingy...
Notices
/upload.php
* Notice line 2181: Undefined index: user1
* Notice line 2182: Undefined index: user2
* Notice line 2183: Undefined index: user3
* Notice line 2184: Undefined index: user4
/include/picmgmt.inc.php
* Warning line 273: imagejpeg(): Unable to access albums/userpics/10001/thumb_IMG_9379~3.jpg
* Warning line 273: imagejpeg(): Invalid filename 'albums/userpics/10001/thumb_IMG_9379~3.jpg'
* Warning line 279: chmod(): Unable to access albums/userpics/10001/thumb_IMG_9379~3.jpg
* Warning line 279: chmod(): No such file or directory
* Warning line 281: getimagesize(): Unable to access albums/userpics/10001/thumb_IMG_9379~3.jpg
* Warning line 281: getimagesize(albums/userpics/10001/thumb_IMG_9379~3.jpg): failed to open stream: No such file or directory
* Warning line 284: unlink(albums/userpics/10001/thumb_IMG_9379~3.jpg): No such file or directory