After another look it seems it may not be a problem with the directory but the the path to image magic convert, I get this warning: Failed executing: /usr/bin/convert etc.
Hi
it is not a problem concerning your path. see this documentation page,
http://ez.no/doc/ez_publish/technical_manual/3_8/reference/datatypes/image well explained ;)
but i've the same problem with the image converter :( so help please