Nero 6.6 update problem

Was hoping someone could help sort out my problem,i have nero OEM i got with my computer,in nero product center it says i have ver6.6.0.16 and to update to,i have downloaded the newer version but when i click run it starts to extract files and then a message pps up “the installer has detected that another installation is running.Please finish first installation and start installer again”.
I have nothing else running,its very frustrating,any suggestions as to whats going on?

cheers guys

All OEM software which come with computer are strip down versions of the software an can not be updated unless you purchase full version of the software