Internal error: Failed to Expand Shell Folder Constant "userappdata"

Internal error: Failed to Expand Shell Folder Constant "userappdata"

 

Click on “Start-Run, type “regedit” (without the quotes)
Navigate to this registry path:
HKEY_CURRENT_USER --> Software --> Microsoft --> Windows --> Current Version --> Explorer --> User Shell Folders
Clear the key: Recent (right mouse click on the key/folder, choose “Delete”)
Close the Registry Editor and restart the computer.

 

If this fails to correct your problem, then

 

The spyware responsible for this makes a simple change to keep you from installing anything new... go to the UserShellFolders folder in your registry, the one where you were told to delete the Recent folder. Look at the APPDATA folder and notice that it has the path $APPDATA$. The path was %USERPROFILE%\AppData\Roaming

Changed the path on the bad comp to %USERPROFILE%\AppData\Roaming and rebooted into safe mode. I was able to install MBAM without a hitch and am currently running a scan the machine.