If you are receiving a synchronization error on upload, please check the following:
1. Before you synch, please verify that you are connected to the internet and that your connection has not timed out.
2. If you are not entering the internet from a proxy server specified in your browser, from your toolbar, select "Edit", "Preferences", then "Connection". Make sure that the "connect using proxy" box is unchecked.
3. If your browser is set to access the internet through a proxy server, please make sure that the Proxy Host/Proxy Port settings within your browser match those within SM Pro.
4. Check your image file names, and make sure that they are saved as jpeg images (we highly recommend saving your images as jpegs due to size and compatibility issues.)
5. Try lowering the security level in any anti-virus or firewall software that you may be using. This type of software can interfere with synchronizations if the security level is set at high or medium-high.
6. Check your image file sizes, and make sure that your images do not exceed 40kb apiece. Large images can cause an upload to fail.
7. If you are uploading a large batch, try splitting it up into smaller batches of no more than 10 auctions. If your ISP is experiencing any connectivity problems, a large batch may cause your upload to fail.
Hopefully, these solutions will help resolve the synch error but if not, please let me know so we can try other things.