I haven't been able to isolate exactly what is causing these crashes so I'm reluctant to post, but as I'm on the latest beta ( the latest stable had some crashing issues too when opening tabs quickly or closing tabs quickly and some on FTP; the beta is more stable than the current production release ).. I may as well start a thread...
It seems to happen mostly when I have a lot of FTP tabs open ( 10+ ) and they either unload and get loaded in when I switch between them quickly. It seems to happen when I close them quickly too - save with regular folders..
Additionally, if I have multiple listers open and I am moving files between left / right panels or doing things quickly the lister will freeze... Sometimes only one side will freeze ( rare ), but mostly both will freeze or the entire app will stop...