It's true that when loading the themes and icons tabs the first time, it takes a bit, because the previews are re-generated each time. I have all of those themes installed here (incl. Moka and a few more) and can't really reproduce the crash unfortunately.
Are you sure that Moka alone makes it crash? If so, from where did you install it? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1458678 Title: xfce appearance settings windows crashes occasionally To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/moka-icon-theme/+bug/1458678/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs