You need to install all games inside the specified folder named "LucasArts"
Example:
Code:
D:\LucasArts\The Secret of Monkey Island Special Edition
D:\LucasArts\Monkey Island 2 - Special Edition LeChucks Revenge
D:\LucasArts\The Curse of Monkey Island
D:\LucasArts\Escape From Monkey Island
D:\LucasArts\Tales of Monkey Island
Then you have to select D:\LucasArts for Input in UltraArc.
If error still there, open UltraArc.ini, scroll down to the end and remove the following
Code:
Exclude2=GameuxInstallHelper.dll
Exclude3=FirewallInstallHelper.dll