i had black blocks on pc trying to run things ,it was a firefox issue as when mouse hovers over text it would vanish and reappear 10 secs later but could not scroll,try other browser as i downloaded it from my link and worked.
there are a number of guides which basically go the same way only difference is what line you use and what cam is loaded,generally nline with mgcamd and newcamd list to var/keys by ftp program like filezilla,cline with cccam to /etc by ftp with filezilla and edit your files there and put your line details in and save .