16 bit error upgrading to Mapsource 6.12

What operating system are you on? Did the install go ok, but when you try to open the app it gives you an error? Is the error like this?...

16 bit MS-DOS Subsystem
drive:\program path
XXXX. An installable Virtual Device Driver failed DLL initialization. Choose 'Close' to terminate the application.
-or-
16 bit MS-DOS Subsystem
drive:\program path
SYSTEM\CurrentControlSet\Control\VirtualDeviceDrivers. VDD. Virtual Device Driver format in the registry is invalid. Choose 'Close' to terminate the application.

In some cases, when you click Ignore, the program runs properly

This can occur if the following registry value is corrupted:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\VirtualDeviceDrivers\VDD

This behavior can occur after you install a 16-bit program or a program that uses a 16-bit installation program that is not Windows XP-compliant. This behavior can also occur if the Command.com file that is installed on your computer is damaged or is the incorrect version.

To resolve this issue: 1. Start Registry Editor (Regedt32.exe or Regedit.exe).

NOTE: In Windows XP, Regedit.exe and Regedt32.exe have been integrated into a single program that combines the features of the two registry editors in Windows 2000.
2. Locate and select the following value:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\VirtualDeviceDrivers\VDD
3. On the Edit menu, click Delete.
4. On the Edit menu, point to New, and then click Multi-string Value.
5. Type VDD in the Value Name box, and then press ENTER.
6. Quit Registry Editor.
If the issue continues to occur, verify that the proper version of the Command.com file is installed in the systemroot/System32 folder on your computer.

Hopes this helps!