CTPatch (often simply called the "Drexler patch") is a program to enable the use of trainers for add-ons to Rollercoaster Tycoon. These contain code which can make it impossible to load a savegame on which a trainer has been used. Use it in one of these cases: * If you find that you get "Invalid Data" messages while loading a game. RCTPatch will remove these error messages and allow you to load any valid savegame. * You want to replace the ride music with your own music. (See the FAQ on how to do this) * If you modified a coaster to be outside of normal specifications, and the reliability drops to zero (e.g. for non-standard train types, launched mode on non-launchable coasters or extreme launch speeds).

Drexler patch (unofficial)
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