If you use a 3DConnexion mouse in multiple versions of Chief Architect and notice it loses any custom settings/speeds when running one version then another (on Windows at least) then read on.   Background (for the interested, otherwise jump to the workaround) Technically this is a bug / limitation in the way Chief registers/configures itself with the 3DConnexion software but given how few people this probably affects I've not reported it as its less important than others and impo