Most of the fan created content for RCT1, including trainers, will not work with the version of RCT (Deluxe) that is being distributed by STEAM and GOG.
To use this content and trainers, RCT1 needs the Drexler Patch to function properly, but the patch has not been updated since the Loopy Landscapes patch for version 1.20.013 of the game.
The creator of the patch has always said that they will provide the source code for anybody who wants to try and update it.
Well, I have the source code! All I need now is some help in debugging the RCT Deluxe code to find out where the new locations are that need patching.
Please reply here, or send me a PM if you'd be able to help.