Mumamo-do-fontify problems

Hey,

I'm using emacs 23.0.60.1 (emacs-snapshot from the ubuntu repos) with nXhtml version 1.61. I'm having trouble with a simple html file. As soon as I open it I get the following error with a huge amount of elisp code.

mumamo-do-fontify-2: mumamo-do-fontify m=nxhtml-mode, s/e=1/228 syn-min/max=1/228: Variable binding depth exceeds max-specpdl-size
MuMaMo error, please look in the *Message* buffer.

Some of the buffer is highlighted correctly but I continue to get the same error message.

I did the same with emacs -Q and got the same result.

Also, when I try the (emacs-Q-nxhtml) I get the following error:
let: Wrong type argument: stringp, nil

Thanks,
Joe