Originally reported as problem report CWBRN-22050 with X3C. Just got the chance to download X3D and try it out - Linplug RMV still crashes instantly upon any attempt to load, but works correctly in X2 producer (64 bit). I have not tried the 32 bit version.
Status was "Under Development" prior to X3D release, so I was hopeful that X3D would resolve the problem.