wow! that did it!
thanks Glas and Keripo!

it's actually on four songs i tried

http://www.mediafire.com/download.php?mt3aryjycmx
http://www.mediafire.com/download.php?ynz44ykj4dz
http://www.mediafire.com/download.php?uywwmjtxgmn
http://www.mediafire.com/download.php?iqmjtlmgghz

they actually work on stepmania though
thanks~

i got this error when i tried to play an sm file mapped for stepmania. i'm not sure what to do with it. i'd appreciate it if anyone can help. thanks. Error: Failed to parse stepfile: Error message: DataParserExeption: line length 6 does not match note type dance-single for line #NOTES