Issue with NI-CAN 2.7.5 DLL(s) install for custom applications

Question

We have custom applications built on top of NI-CAN for Windows using the MS Visual C lib and header. In the past, to run our applications, we simply installed the latest NI-CAN package. Our applications would run, find and access any runtime DLLs, and be fine.
With NI-CAN 2.7.5 though, we are seeing errors in our applications that suggest they cannot see the required DLL necessary to operate. The error is:
"A dynamic link library (DLL) initialization routine failed."
Did anything change in 2.7.5 with regards to the placement or installation DLLs required to run custom NI-CAN applications?

Answer 1

I was able to get a little more information. Using Visual Studio to get a debug log, I see the following. With 2.7.4, the NI-CAN DLLs load and it work fine:
'MATLAB.exe': Loaded 'E:\jobarchive\Btm1\2014_02_21_h12m30s17_job89749_pass\matlab\toolbox\vnt\vnt\mexNICAN.mexw32', Symbols loaded.
'MATLAB.exe': Loaded 'C:\Windows\System32\Nican.dll'
'MATLAB.exe': Loaded 'C:\Windows\System32\NIcanFrm.dll'
'MATLAB.exe': Loaded 'C:\Windows\System32\nipalu.dll'
'MATLAB.exe': Loaded 'C:\Windows\System32\nipalut.dll'
'MATLAB.exe': Loaded 'C:\Windows\System32\nipal32.dll'
'MATLAB.exe': Loaded 'C:\Windows\System32\NIcanpu.dll'
'MATLAB.exe': Loaded 'C:\Windows\System32\NicanCfq.dll', Binary was not built with debug information.
'MATLAB.exe': Loaded 'C:\Windows\System32\nicanDBA.dll', Binary was not built with debug information.
'MATLAB.exe': Loaded 'C:\Windows\System32\NicanTsk.dll'
'MATLAB.exe': Loaded 'C:\Windows\System32\NiSpyLog.dll'
On 2.7.5 though, additional error information shows up:
'MATLAB.exe': Loaded 'T:\12\jpyle.Btm1.j86236.sb\matlab\toolbox\vnt\vnt\mexNICAN.mexw32', Symbols loaded.
'MATLAB.exe': Loaded 'C:\Windows\System32\Nican.dll', Cannot find or open the PDB file
'MATLAB.exe': Loaded 'C:\Windows\System32\NIcanFrm.dll', Cannot find or open the PDB file
'MATLAB.exe': Loaded 'C:\Windows\System32\nipalu.dll', Cannot find or open the PDB file
'MATLAB.exe': Loaded 'C:\Windows\System32\nipalut.dll', Cannot find or open the PDB file
'MATLAB.exe': Loaded 'C:\Windows\System32\nipal32.dll', Cannot find or open the PDB file
'MATLAB.exe': Loaded 'C:\Windows\System32\NIcanpu.dll', Cannot find or open the PDB file
'MATLAB.exe': Loaded 'C:\Windows\System32\NicanCfq.dll', Binary was not built with debug information.
'MATLAB.exe': Loaded 'C:\Windows\System32\nicanDBA.dll', Binary was not built with debug information.
'MATLAB.exe': Loaded 'C:\Windows\System32\NicanTsk.dll', Cannot find or open the PDB file
'MATLAB.exe': Unloaded 'T:\12\jpyle.Btm1.j86236.sb\matlab\toolbox\vnt\vnt\mexNICAN.mexw32'
'MATLAB.exe': Unloaded 'C:\Windows\System32\Nican.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\NicanTsk.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\NIcanFrm.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\NicanCfq.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\nicanDBA.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\NIcanpu.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\nipalu.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\nipal32.dll'
'MATLAB.exe': Unloaded 'C:\Windows\System32\nipalut.dll'
You can see it tries to load under 2.7.5, get a bunch of PDB file issues and then immediately unloads.
Inspecting the DLLs under 2.7.4 vs 2.7.5, they look identical except for the nicanDBA.dll. That's the only one that has a version difference between NI-CAN versions. In both 2.7.4 and 2.7.5, all DLLs are being properly installed to \windows\system32 as expected so both sets are fully accessible path-wise.
Please advise.