Well did the flash uploader work in PhotoPost Pro?
The point I am trying to make here is the flash uploader is developed by another company and we do not support it. This is clearly stated in the release. We release the code as is and there is an on off switch in the upload options.
If your trying to use the uploader and the file never makes it to the users uploads directory for the photopost vbgallery to take over and process a file then something in the flash part is not working.