Note: The AjaxUploader work fine with VS2008, but errors with users on the Internet.
Internet users also receive this error message when trying to use the AjaxUploader button:
"Warning: The AjaxUploader module is missing in the web.config"
[Solution]
Make sure you DO have the correct code in the web.config then if using II7 and Windows 2008 Server as I do, follow these instructions:
1. Got to correct web site
2. IIS -> Modules -> Add Managed Module
3. Click 'Type' dropdownbox and find 'CuteWebUI.UploadModule'
4. Write a name like below
5. Don't select the checkbox
6. Click OK
Name: CuteWebUIUploadModule (or whatever name you like to use)
Type: CuteWebUI.UploadModule