help!! same problem here...
I've compared the original file and corrupted files binaryly, the corrupted ones seem to be add some additional data at the beginning of the file.
my Joomla version: 1.0.12
my SMF version: 1.1.4
my Joomla-SMF version: 2.0.2
check the following link please:
http://www.opensource-academy.cn/index.php?option=com_smf&Itemid=35&topic=9.msg9#newlike Aru Baito said, only plain text is ok