Im using mudbox 2011
Hardware Overview:
Model Name: Mac Pro
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.66 GHz
Memory: 7 GB

Install went fine (supposedly) my problem starts when I try to do anything - no matter what I load or create: mesh - if I zoom out in the slightest, everything disappears, no mesh no grid - just limbo! I cannot zoom back in and find the mesh… If it is a crash its not a hard crash because everything is running not frozen - its just gone. Is this a display card issue? Not the strongest card I know but such a simple thing as zoom in/out? waiting on a new loaner card (Nvidia GTX 285) or plan to buy either ATI 5770/5870… Can’t see how this works on laptops (my MPB and others here on this forum) but fails on my desktop… BTW - select all and “F” will not find the mesh - its just limbo and requires a restart which starts the whole process over again…

Thanks for any help/suggestions

FWIW - the card and displays:
NVIDIA GeForce GT 120:

Chipset Model: NVIDIA GeForce GT 120
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 512 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0640
Revision ID: 0x00a1
ROM Revision: 3386
Displays:
HP LP2475w:
Resolution: 1920 x 1200 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: CNC0250BZP
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Cintiq 12WX:
Resolution: 1280 x 800 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: 0IC000119
Mirror: Off
Online: Yes
Rotation: Supported

OK sports fans, for whatever reasons, murphy’s law perhaps - “A” seems to be working now. Plz ignore ...

thanks again