Hi,
I am not able to reproduce in the sample you have above. I am using asp.net MVC.
I updated the assemblies as you suggested and now the error is thrown after a greater number of these files "CuteWebUI_Uploader_Resource.axd?type=script&_ver=" are loaded. What can I do to release these .sxd resources. Any ideas as one of these files are loaded each time I show a pop-up window from my Viewport.