Gets the list of old registry keys, obtained from upgrade information.
These keys are destroyed during the installation to only keep the clean keys.
Can indicate that:
-A previous installation (MSI/InstallShield) has been detected.
-The product code has changed and these keys represent an old version of the application.
Namespace:MicaSystems.Utils.Setup Assembly:
MicaSystems.Utils (in MicaSystems.Utils.dll) Version: 1.0.0.0 (1.1.0.123)