I have an iGeom program that builds geometry "from scratch" (using functions like createBrick and boolean opertions), then writes it out. This program is only known to work with a CGM that's built against some form of ACIS modeling engine. I was asked whether it could write a STEP file, and these were the results. For CGM built with 64-bit ACIS or 64-bit Cubit: attempting to write a .step file produces this message: "ERROR: The STEP translator is not licensed for this installation". For CGM built with 32-bit Cubit: attempting to write a .step file makes the program segfault in AcisQeuryEngine::export_solid_model() (inside libcubiti19.so). The fault is a write through a null pointer; further debugging info is unavailable. I don't have a bare copy of 32-bit ACIS to test. Are these known issues? ~S