zSpheres stops connecting what is the reason of these ? May be count of zSpheres couse these prob ? it began from 32766 zspheres count, i can steal add points but they are not conncet into polygons 
pictures?
I can guess what your problem.
Zbrushs retopology tools cannot retopologize under an certain ammount
of polys. 4 sides wont be enough try adding loops around the side so its 6
faces that should solve the problem
2 Disco Stu - thx dude - but not in this case(
there - last zsp not even highlighted ! no further connections available 
Attachments

32766 zspheres count
i guess that is the prob ! to many zspheres on single object! I think its BUG , I hope I wrong !
no connection :evil: :evil: :evil: :evil: :evil: :evil: :evil:
P.S. i leaved space there to show you whats going on!

clear masking even if you don’t think you have any.
toggle edit topology on and off once.
no masking - nothing…topology button pressed many times , reloaded mesh and not, same result !( WHAT IS GOING ON ?
i tried everything ! I’m not noob I working with zb since 2004 and i do not no what to do 
HELP ME !!! :ex: :ex: :ex:
Help !!! 
according to this page there is a limit when importing geometry, i don’t know if thats what you did.
http://www.pixologic.com/docs/index.php/Importing_Topology
anyway. retopology is mostly about creating a low res mesh and 36000 is not near that. why not create a lower mesh?
thx alot man ! its limit…ok) i my task need more than even 100000 zSphers to many details must be on mesh…soon I will post some stuff 