Apple iTunes "unknown error 39" Questions

error: java.lang.NumberFormatException: For input string: "12,00" at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source) at java.lang.Float.valueOf(Unknown Source) at com.storyrock.dlog.cE.a

iTuens Error I keep getting this iTuens error "An Unknown Error occurred (-39)". What is the cause of this error? This is the best I found: http://support.apple.com/kb/TS1279

when i try to purchase music from itunes...unknown error 2037 comes up Well, it's iTunes fault, they're ****, and you ust have to wait it out for a while

...installation or damaged data file. You should follow the instructions at the link above and hopefully you will recover from this situation. Quark Xpress 6.5 mac platform, Unknown error.

unknown error (-50). can you please tell me what this means and how to fix it? Please try to re-install iTunes. You need to completely uninstall it and then install it again. Here's a link to help