I don't think it has been improved enough because I am getting the same error.  In fact, I am getting the error when there is more than one person uploading.

 

When will this be fixed?  I don't like seeing my application throw errors and I definitely don't like the heat it brings down on me concerning these permission errors.

 

Why can't you guys use a GUID for the txt file name?  Do I need to code around your control and dynamically create temp directories per user that goes to a page that has your upload control, just so I can keep management off my back?

 

Please look into this and fix it.