micro 2.4 can't find cd drivers

[MTUSUPPORT]

The reason this is happening is that you have changed Users. In Microstudio 2.400 the security was set to use one certain registry key, where it stored the information. This was only able to be used by the User that the program was installed under. We have now fixed this, in Microstudio 2.50x. Which should be released early next week sometime.

You should try to uninstall the program, and then reboot the system, then reinstall under your new User Name and it should then work without any problems.