Now next time you get an Run Time Error while working in MX, first check for the 'User Account Control' setting. Trying setting the User Account Control setting to 'Never Notify', reboot the system and then work with MXRoad.
Here are the steps to set the "User Account Control' to 'Never notify':
1. Go to Control Panel > System and Security.
2. From 'Action Center' category, select 'Change User Account Control Settings'
3. Set it to 'Never Notify'. Hit OK.
Reboot the system.
P.S. This is applicable only for Windows 7 systems.