I change a computer so I copy the whole thunderbird Portable to my new computer.
The Thunderbird Portable works fine on my computer except that it can't record my new Message filters info. When I modify my Message Filters, the thunderbird works immediately and correctly.
But after I shut down and restart the thunderbird portable, the new message filters are gone. I don't know why.
I can't modify the filters config file manually:
But just can't save the change to this config file in thunderbird.
What's wrong with my thunderbird portable?