when creating a custom map single player game the program locks up  in entrenchment, ie mouse cursorstill moves, but will not click on anything , can not alt tab out,can not use windows key to swtch to desktop, can not ctl alt del to task manager, only things that work are reset button mouse movement and power button when held in for 10 seconds

the problem is a difference in the map designer files poping up a black on black dialog box asking to skip the errors in the latest format of the mapdesigner maps and also in any pre 1.1 version maps

apparent work around is to move the suspect maps ie any with a mod date before 16/12/2008 out of the galaxy folders