Default Question marks in filename using CM9

I'm using CM9 Reloaded 1.2 ROM (http://forum.xda-developers.com/show....php?t=1563171), and found that all filenames containing chinese characters are displaying as question marks.
I have done factory reset and wipe all caches, and nothing better happened.
I know the best solution is using another rom, but i love to use it and want to fix this little problem.
Is there anyone can help me?