Symphony Issues

I’ve been doing some more work on a Symphony site and I’ve hit a snag.

Basically the images load fine but not if I use the image processing functions. I’ve contacted my hosting provider and GD support is enabled so that’s no the problem. I seem to remember having this problem on a local install but I can’t remember what I did to fix it.

I’m going to try reinstalling again anyway but just in case I wanted to post here to ask if anyone knew what my issue might be.

Here’s my XSLT:

Again this works perfectly if I don’t use the image function. Images are uploaded to “workspace/uploads” and you can see an example of the offending page here: