My setup is two 25i's in a IIx with dougg3's ROM SIMMv2 loaded with a IIsi image. The host is running System 7.1 and RocketShare 1.3.1.

The RocketShare extensions load and nothing complains. Mission Control launches, but everything takes an exceptionally long time. Launching Mission Control is slower than usual, and launching one of the Rockets takes forever and then crashes presenting a Mission Status Report window saying the Rocket crashed during launch.

I'll mess with it a bit, create a new disk for the rocket, and see how it goes. Not so great so far though.