Marcus, the same problem.
Fatal error: Call to undefined function imageconvolution () in / var / www / iwiccle / core / class_uploader.php on line 299.
But GD is working:
GD Support enabled
GD Version 2.0 or higher
FreeType Support enabled
FreeType Linkage with freetype
FreeType Version 2.3.5
T1Lib Support enabled
GIF Read Support enabled
GIF Create Support enabled
JPG Support enabled
PNG Support enabled
WBMP Support enabled
Picture JPEG.
