"As of Version 5 SR3 (5.3.30424.5565, 4/24/2013) This problem appears to be fixed! Yea!"

"There is a release of Rhino on the 24th and I have yet to test to see if they got the fix in that version. The guys at 3Dconnexion have an excellent example of the problem so I know they passed it on to the folk at McNeel to help…"

"Hey guys,   I'm having exactly the same problem (64 bit Rhino 5, 64 bit Windows 7, Spacemouse Pro). The view starts flickering and the camera does a 180 degree turn when you try to zoom past the focal point. Incredibly frustrating…"

"Both McNeal and 3Dconnexion updated in the past two weeks and I keep my software current as per my contract's security clause (requirement is not older than 30 days of release). I don't know which one is at fault and really it doesn't…"

"well i'm not sure about the fact that the trouble comes from the 3d connexion driver because it does'nt update automatically in my case and it was working correctly during more thatn 2 years... maybe the last rhino 5 SR..."

"I just got this response from 3Dconnexion; Support for both products is on the case but if we whine and kick the backs of the seats and ask repeatedly, "Are We There Yet?" then maybe they will get it done faster ;-) The 3D mouse is…"

"Steven, I suspect that Pascal may be right about the drivers. Please go fill out a bug report over at 3Dconnexion.com so they will see it is more than just me having problems. The sooner we can get this resolved the better! Thx, Jb"

"Hi JB I've got exactly the same problem since around one week, also with my 3d connexion space mouse. I've update my driver but it's the same.."

"Ooh, no. I can get the same issue with my mouse wheel. Its harder to do with the mouse but it occurs when you do long zoom ins (aka from way out) without pausing. I will drop a note to Logitech as well just to cover all the possibilities. Thanks…"

"Hi John- so I take then that this is mostly a 3dConnexion problem (ObjectMode/CameraMode is a 3dConnexion setting, not Rhino) is that correct?  -Pascal pascal@mcneel.com"

"Sadly, no. The adjust switch doesn't seem to resolve the problem. When I switch to Camera Mode (I was in Object Mode) the problem goes away though giving more evidence that its the zoom value going negative specifically. jb"

"Hi John- does it help, or change anything, to uncheck the setting for 'AutoAdjust camera after pan and zoom' in Options > View page? -Pascal pascal@mcneel.com"

"Hi John- the idea is to split up surfaces where there are tangent segments (as distinct from Curvature continuous) in the surface- so here, you'd split that rounded corner from the straighter surface that it is attached to. If you use Split…"

"Thanks, Brzęczyszczykiewicz and Pascal! Brzęczyszczykiewicz's worked. Maybe I'm not following your direction correctly, Pascal? Anyways, thanks so much for your time! I'm at least back to perfect looking models again! jb"

"Hi John- try this: ExtractSrf the surface that looks ugly, and use Split > Isocurve with the Int osnap to split off the corner from the rest of that strip right on the isocurve. Use the Shrink=Yes  option. Then rejoin. Does that look…"