WTF...WoWreader HELP!!!Follow

ok well i was online while downloading WoWreader...then i used it nothing happend i logged off WoW and try relogg and this message do i get:
"unable to validate game version. This may be cause by file corruption or the interference of another program. Please visit www.wow-europe.com/eu/support for more information or possible solution to this issue"..can ya please tell me wtF %¤¤#"¤"!#§"##¤"%¤ going on have ya buged my PC or something i mean..comeon ..