I think it's the signature check hack that is causing the problems still. Try replacing the files that you modified for that hack, with originals and see what happens.

you were right, I just re-check and the hack does made that error.
here is the part -
It always goes to the
if ($image_xy==NULL)
{
return "Image not found";
}

the error is "Image not found" if I didn't clarify that already.
I don't know if someone had mention it on the support thread so i'll go check now and will edit my post later to let you know if more help is needed.

Thanks again if someone knows how to fix it