it is a Firefox bug, see: https://bugzilla.mozilla.org/show_bug.cgi?id=938816 and it is already fixed in 26 beta.

JM

On 27 Nov 2013, at 13:33, Graf von Roit zu Hoya <graf.roit@gmail.com> wrote:

Hello,

CalDavZAP 0.10.0rc4 still kills Firefox 25.0.x. Immediately after showing the login window, firefox crashes. This error ist constantly reproduceable. Unfortunately the crash is so heavy that there is no posibility to get results in the dev console.

Best regards,
Rudolf