The problem: When I add multiple SDE layers that have Z-values to a map in ArcGIS Explorer (AGX) and zoom in or out, the program crashes. Not necessarily every time, but at least half the time. Panning seems to work fine, as do layers without Z-values. Here's the "problem signature" from Windows:
Problem Event Name: APPCRASH
Application Name: E3.exe
Application Version: 2.0.0.1700
Application Timestamp: 4df14603
Fault Module Name: ntdll.dll
Fault Module Version: 6.1.7600.16695
Fault Module Timestamp: 4cc7ab86
Exception Code: c0000005
Exception Offset: 00032ec0
OS Version: 6.1.7600.2.0.0.256.4
Locale ID: 1033
Desktop platform: AGX build 1700 with the data access expansion pack installed. Workstation-class Dell with Windows 7 64-bit and the most recent graphics drivers from NVIDIA.
Server platform: Windows Server 2008 R2 running SQL Server 2008 R2 and ArcSDE v10.
I'm pretty sure I've experienced this problem since I started using AGX at build 1200, but it hasn't really come to a head until now.