I used this style also and get the same error when I try and post from the machines at work... The error pops up when I try and change the font format. On my home machine though everything works fine with no errors... not sure what's up with it...
Just a thought.. Is your computer updated with the latest updates... My home machine is but I'm sure we're missing some update on these new machines at work...
I made some changes to the style on my site but hats off to the person that made it..
www.team-undercover.com