Issue with thunderbird portable 3.1.10 running from a networked drive

Hi,

I installed and reinstalled portable thunderbird 3.1.10 on a networked drive. It is not working at all. I continue to receive the message :"Mozilla Thunderbird, Portable Edition cannot be started. You may wish to re-install to fix this issue. (ERROR: thunderbird.exe could not be found)".

Did somebody have any idea how to make it work?