I have been working with VWInc and they have come up with what appears to be a solution.  This is for people who can not use Multiple Labels with Space Objects in VW2017 SP4.   Quit Vectorworks. Drag the following folder to the desktop (so you can put it back if it does not help)                /Users/your user name/Library/Application Support/VectorWorks/2017/Plug-ins/RuntimeCache   Restart VW.   For me, this restored the full functionality of the sp