Download issues

Our isp provides aspUpload but when we use it we get the following error:

Persits.Upload.1 error '800a0028' 
This feature has been disabled by system administrator. 
wexLite/plugins/aspUpload.asp, line 71

And when we use wexGeneric.asp the files don't know what format they are when it comes time to download.

Can anyone offer any suggestions.

Thanks