[Plugin: WordPress Mobile Pack] Problem with image shrinking

This plugin is working great… except for the image shrinking. Images display fine without the image shrinking enabled, but are too large to view on the phone. When image shrinking is turned on, the images are just broken.

The wpmp_transcoder/c folder has the correct permissions, and files are being put in there which do correspond to the source URL being used for the images (but with extra numbers added onto the end?). I tried the fix mentioned here just in case, but it doesn’t appear to have any affect.

Is there a way of fixing this? And if not, is there a similar mobile plugin that will work with images?