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The GOG installer for CC5 does not make the registry entry to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Mattel Interactive\Close Combat\5.00\InstalledTo

It sets the value data to a single period.

If the installer set the value to C:\Program Files (x86)\GOG Galaxy\Games\Close Combat 5 installing mods would work better.

Is this a change that can be made?