Sorry, but I'm bumping this topic as the bug still seems to be an issue.
These mods are amazing, for the sheer fact that I'm playing this ancient game (easily one of the best ever) at full resolution on my Mac so many years later. But this one really puts a damper on the pivotal warps and explosions in the game.
I downloaded nightly build 7355 last night. In addition to -no_glsl, it has an option for -disable_glsl_model, which I assume is a subset of -no_glsl. Disabling "glsl_model" at first glance seems to do the trick. So maybe that narrows it down a little further?
I don't like the fact that I'm missing some effects because of it, but I guess that's my other question: does anyone know what exactly -disable_dlsl_model disables? Is it less than -no_glsl? The description says "don't use shaders for model rendering", but isn't that all shaders are used for? Or are they applied to beams/warps/background as well?