During upload with Express Send we compile a list of all your images and generate a small thumbnail image of each one. This process sometimes can slow down uploads or causing the error 10003 or 10006. You can always try the solution for fixing these errors using our self-help section. (Click here to view the Error 10003/10006 guide).
- Click on Start and Search for "Express Send Settings."
- Uncheck the box labeled: "Use Thumbnails."
- Click "Save Settings" and retry your Express Send Uploads.