I can confirm I'm suffering the above described issue ever since I
upgraded to 10.10. I can open none of the images in f-spot and
thumbnails regeneration also fails.
I have attempted to pull f-spot from the team's PPA
(https://launchpad.net/~f-spot/+archive/f-spot-ppa). The current version
there
I can confirm that.
f-spot worked fine with UTF-8 path until I've installed Maverick with f-spot
0.8.0. Currently thumbnails does not appear and the application crushes each
time I choose to display an image yielding the aforementioned stuck trace.
Please let me know if you need further testing