I'm using Crayon Syntax Highlighter 2.3.0, but, when I activate it, whenever I open a blog entry with code, it opens a popup:
The requested URL /[object Object] was not found on this server.
I used this plugin in the past with no problem, but I don't know from wchich version it started to act like that and don't know what to do (i.e.: downgrade, touch the code, disable it...).
You can test it on: