Like it says, this error is posted when I try to run the installer for the MANDATORY update:
"The installer you are trying to use is corrupted or incomplete.
This could be the result of a damaged disk, a failed download or a virus.
You may want to contact the author of this installer to obtain a new copy.
It may be possible to skip this check using the /NCRC command line switch (NOT RECOMMENDED)"
Anyways, HELP ME PLEASE!