Public Property Get ExpectedVersion() As Double
This property contains the version of Transport Tycoon Saved Game Manager it was designed to work with. Any future builds will (hopefully) be backwards-compatible with version 1.2, but new functions will be introduced. The Saved Game Manager compares this version with its own version and if ExpectedVersion is newer, doesn't load the plug-in.
Note: I added some version 2.0 plug-ins to the version 1.2 PLUGINS.INI, and it seems that SGM 1.2 does not check the version properly as it attempted to load the plug-in. If you click Ignore when the error messages appear, you will eventually get into the Manager.
Public Property Get ExpectedVersion() As Double ExpectedVersion = 1.2 End Sub