How are you transferring RA2 between the two computers (flash drive, seperate installs, etc.)? Assuming that you are using the same files as him, does the game still play on your brother's computer after seeing this error on yours?Have you tried updating your sound and video drivers?
It may look like you have too much crap on your computer (malware, adware, worms, etc). Download Malwarebytes' Antimalware (google for it), run it and scan your hard drive.
You got my vote for RA2 Wizard. Always and forever.
you must have forgotten a file somewhere or something.DOWNLOAD A FRESH COPY FROM MY SIGNATURE. On to YOUR computer.
DOWNLOAD A FRESH COPY FROM MY SIGNATURE. On to YOUR computer.