I just tried the latest GPA (4.0.144237) and was surprised to see that the vertex/pixel shader constants are not available from the State tab. Am I just blind? I had to revert back to PIX for Windows to debug that kind of problem.
This is a DX9 app, I don't know if it works with DX10 constant buffers.
In case it's relevant, here is the Monitor's About box info...
Windows 7, 64-bit DEP enabled
Num Processors: 8
System BIOS: Hewlett-Packard 786G3 v01.17 (08/19/2009)
Video BIOS: Version 62.00.4C.00.08 (03/12/09)
Device: NVIDIA GeForce GTX 260
No support for GPA Instrumentation
GPA install directory: C:\\Program Files\\Intel\\GPA v4.0\\
GPA version: 4.0.144237
Current user is in Administrators group: YES