Thanks for this information. Could you please generate log file and send to me?
I am also having this problem..
Appears to be an issue with file paths when using redirected folders in a windows server environment.
Could you provide more details? Which folder was redirected? Your home folder? Product installation folder? Per-user product configuration folder? The folder where you placed your zxp file?
Please create a file called 'ExManCoreLibLog.YES' and place it in the following location:
C:\Users\<UserName>\AppData\Roaming\Adobe\Extension Manager CC\Log\ (If your home folder is redirected, place it in appropriate folder), reproduce your problem, then send the generated log file in the same folder to email@example.com. Thanks!