It seems that dm 1.21 fixes this bug. btw, it was about the some optimization techniques that are not compatible with new CPUs
When updating DM2, please note that old language files are missing the translation for new added strings. Therefore, all these new strings will apear in a strange format:
number[Section]
which has been done for purpose.
So please, until someone upgrade your language file, use English or Chinese instead. Thank you for the understanding!
btw, list of most recent translations is here:
http://dm2.sourceforge.net/languages.html