Did you go to the thread I linked to?
If you are referring to this bug then it is only evident when you do something invalid
The charset must be the very first thing in the stylesheet and then it will work properly. It is not allowed to be after any characters (visible or invisible) or comments or code.
If it's badly formed or incorrectly placed then it will produce errors.
Yes, I siad in the thread I linked to that the charset was invalid, I pointed that out to the OP, however I did not know about how to go about best fixing the bug in the other thread, so I gave the OP in this thread and hte last thread the same advice.
I figured it had to be a bug though I did not go looking for the actual bug report.