Fix problems in phpthumbof with imagemagick path
line 118: public $config_imagemagick_path = null;
istead of null, use '/usr/bin/convert'
Problem is still in 2.2.8 but the old fix doesn't work anymore. config_imagemagick_path is'nt there anymore.
2do write a bug report and find a fix for this anying problem.
Might be related to php 5.3 and fastcgi.