Important Patching Information
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The message that appears the first time you run the program explains some key points when creating courses. The message is the following text:

Under certain conditions, courses will fail to load once patched to the ROM. If control points are too close together, the course will fail to load. If a course curves too sharply, the course will fail to load. If there are too many decorative elements on the course, the coruse will fail to load.

Remember to check the "Recalculate Header Checksum" check box if you want to immediately play patched courses on console or an emulator.


More information about patching courses to ROM can be found on the Patch to ROM Window page.

A common way that people make courses unplayable is to make the course curve more than 90° around a single control point. In the picture below, the image labeled "Bad" shows how this can be done. The image labeled "Good" shows a nearly identical curve created with two control points instead of one. Doing what is "Good" will lessen the chance of a course being unable to load at run-time.