Corrupt(par2 stuff)

ok today i downloaded American Gangster, Pukka release is 2 Cd's i downloaded each of them from different group, there finished but when extracting i get the following errors:

Cd1:
http://img521.imageshack.us/img521/1722/57596589wg1.jpg

Cd2:
http://img249.imageshack.us/img249/8900/32238944rr6.jpg

i dont know whats wrong but when i created nzb files from binsearch they were labeled(xx/xx) green that means complete archive but i didnt download par files, now if par is needed should i download it from same group or what, and please somebody guide me through cuz i dont know shit about it nor i got anything from slyck guide, am using newsleecher which has built in repair option.

i just found that every single those errors are written in capital instead of small letters.
http://img89.imageshack.us/img89/2730/56815042ow1.jpg

nvm mind folks did it myself
i guess those par are not bad to be queued no body knows when you need them.
thanks