after the internet at my school shut down due to power failure, i was only able to download half a file. when i go to system package m.. i am unable to do anything.... this is all i see
E: dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem.
E: _cache->open() failed, please report.
what do i do to correct this? never done this before and i dont want to mess up my computer.