Adam, here is the result 

  Using UploadAttachment when installing flash player 10 in the client gives me the following error. The version that we have installed it is the AjaxUploader 2.0 20090107 we have already bought Ajax Uploader Developer License.     please help! Best Regards   Juan

Dear Customer, It works fine now, please download the latest version and try again. latest version downloads: http://ajaxuploader.com/download/Ajax-Uploader.zip Regards, ken

This function is implemented in the latest build.   Article: Enable and disable mimetype checking on uploads   Online Demo: Enabling and disabling mimetype checking on uploads   Download: Ajax Uploader for ASP.NET 

Is there a way to have the uploader redirect to another page after all the files have completely uploaded? If so, how? Thanks!  

''Latest build'' is where?  If I click on Download for Ajax Uploader, it's showing version 3.0 dated 9-30-2008.THANKS

Whn i put the Ajax Uploader control in the Update Panel it gives me following error.   Sys.WebForms.PageRequestManagerServerErrorException:Filtering is Not Allowed.

Figured it out.   Replacing Response.end with uploader.WriteValidationOK() - worked. 

stuartwachsberg,   Ajax Uploader maintains this folder and automatically deletes old temporary files .

johansec,   We have tested 64bit IIS7 server. It works fine in our side.   Can you try disabling siliverlight then try again?   uploader.SetAdvancedOption(UploaderAdvancedOption.NoSilverlight, ''true'');   Keep me posted