Steps to reproduce:
1. Paste url for Contruct 2 preview
Firefox shows me "Contruct 2 preview" in the tab title and immediately crashes.
Preview works perfectly fine in Chrome. This is my first time using preview in FF as I wanted to check CSS via Firebug. I don't know if this would have happened before today's release.
Chrome: no, version 28.0.1500.72 m
Firefox: yes, version 22.0
Internet Explorer: unknown
Operating system & service pack: Windows 7
Construct 2 version: Release 139 (64-bit)