When I run transmission-gtk on my Linux Mint, the window is shown as usual but suddenly it crashes. I tried transmission-gtk on terminal and the output was Segmentation fault. I didn't update or upgrade the system before this happened, but I did run sudo apt-get --purge autoremove once.
How can I fix this?
You could try
sudo dpkg-reconfigure transmission-gtk
And, if that doesn't help, completely remove it and reinstall:
sudo apt-get purge transmission-gtk && sudo apt-get install transmission-gtk
This could also be caused by something in your user's settings. Try renaming transmission's configuration directory:
mv ~/.config/transmission/ ~/.config/transmission.old
transmission old/torrents files to new. then it crashed again. i deleted all and tried just a random torrent file. then transmission works fine.
I got the same error. After debugging it in IRC channel #transmission (thanks to xn0r!), we found it to be a bug in miniupnp: https://github.com/miniupnp/miniupnp/commit/3a87aa2f10bd7f1408e1849bdb59c41dd63a9fe9
