A bug-fix release on v3.1.2.
Fixed a crash loading a mod's stage on Windows (reported against v3.1.2 with GE-X: EXCEPTION 0xc0000005 in a mission's load). The Increase Poly Models mesh pass, which runs on every model whether the option is on or not, followed display-list addresses inside a model file without checking they were in the file. A mod's model can point outside its file, and on Windows that read was an access violation. Every address the pass follows is now bounded to the model's own buffer; a model that points elsewhere is skipped with a warning in the log instead.
Also from that hunt: the pass read a model's vertex count from the wrong field, which had GE-X models asking for four vertices past the end of their array.
You need your own Perfect Dark ntsc-final ROM — see README.md inside the download for where it goes.