I have the same issue, thumbs are not created when I load files, no error message given. If I try to create thumbs in the ‘manage gallery’ screen, no error is given, no thumbs created. (was working with previous version) My settings:
Operating System : Linux (64 Bit)
Server : Apache
Memory usage : 35.75 MByte
MYSQL Version : 5.1.47-community-log
SQL Mode : Not set
PHP Version : 5.2.14
PHP Safe Mode : Off
PHP Allow URL fopen : On
PHP Memory Limit : 64M
PHP Max Upload Size : 10M
PHP Max Post Size : 10M
PCRE Backtracking Limit : 500000
PHP Max Script Execute Time : 30s
PHP Exif support : Yes ( V1.4 )
PHP IPTC support : Yes
PHP XML support : Yes
Graphic Library
GD Version : bundled (2.0.34 compatible)
FreeType Support : Yes
FreeType Linkage : with freetype
T1Lib Support : No
GIF Read Support : Yes
GIF Create Support : Yes
JPG Support : Yes
PNG Support : Yes
WBMP Support : Yes
XPM Support : No
XBM Support : Yes
JIS-mapped Japanese Font Support : No