LATEST UPGRADE 365 VERSION

[tigermoth]

HI I JUST DOWNLOADED THE LATEST UPGRADE VERSION 365,AND WHEN I ATTEMPTED TO INSTALL IT I GET AN ERROR MESSAGE 05 ?? ALSO THE OLD VERSION FIRES UP BUT IT HANGS AND CAN NOT GET IT TO RUN AT ALL!!!!!
IT ONLY LOADS AND SHOWS 2004 SIM PLANES BUT WONT EVEN CLOSE DOWN WITHOUT TURNING OFF MY PC. HOPE YOU CAN HELP

THANKS