Hi, sorry for the late reply.
I've been told by the developers that the details you requested are...
The version of the editor is: 6.4.0.0
There is a configuration for where the files are stored on the server after the upload which is set to “~/CuteEditorTemp”.
Is there anything i can try?
Could it be that there may be something restricted for a user? It works first time, but doesn't for the next file being uploaded.
Cheers