It looks like my huch was right. After replacing dynload.library with my own loader, the crashes on dlclose() disappeared. I kept loading saves and maps so that the game module is reloaded, and I had no crashes. I'll do some more playing testing, and if nothing comes up, I'll publish new executables for Jedi Academy and Jedi Outcast. Thanks for everyone who helped me (without Wipeout I couldn't have pinpointed the place of the crash), and those who have waited patiently