what antivirus program do u use?
make sure you are installing on the correct disk ( make sure it has plenty of space).
oh, and make sure to go to your firewall, and add mapleroyal.exe into trusted files. sometimes, when u run mapleroyal, your firewall/antivirus...
that weird. have u tried to uninstall and reinstall? let's see if that helps.
Separate names with a comma.