Small re-iteration of testing the Octane 4 Poser Plugin with a select set of recent NVIDIA graphics drivers
that I still had on disk from my last conquest to find an updated driver that would work.
Since Paul requested detailed information I picked a few versions once more and ran the following test procedure.

Hope this helps you to nail down the problem why the plugin does not work with newer drivers anymore.
At least it does not on my system.


scene used: "just andy.pz3", "just andy.ocs" (see below)


test preparation:
-----------------
- driver 358.50 was initially installed
- launched Poser with empty startup scene that contains only the ground item
- added the andy figure from the poser library
- opened octane render dialog to create render target data
- saved the poser scene to "just andy.pz3"
- exported the scene as animation for frame range 1 to 1 (1 frame total) to "just andy.ocs"

- octane for poser devices config: only primary gfx card (GTX 970) active, using low priority
- octane standalone devices config: both gfx active, using low priority


test prodecure on each iteration:
---------------------------------
- install nvidia gfx driver
- reboot system
- after login wait several minutes on idle dekstop to ensure all startup procedures have settled down
- open poser and load "just andy.pz3" from the recent files menu
- open octane render plugin dialog
- open cuda log window
- drag both plugin windows onto 2nd monitor
- click "open viewport" -> results listed below

- close plugin and poser
- open octane standalone
- load "just andy.ocs"
- click render target -> results listed below (this time it worked on all tested driver versions, other than before)
- advance to next iteration by installing next driver


system information:
-------------------
Windows 10 Professional (upgraded from Windows 8.1 Home, which was upgraded from Windows 7 Ultimate)
all updates for operating system and installed software patched to most recent level available

Software:
Poser Pro 2014 Game Dev, v10.0.5.28925
DAZ DSON Importer for Poser Plugin, v1.2.0.12
Octane4Poser Plugin, v2.25.0.68
Octane Standalone, v2.25
Asus GPU Tweak II, V1.0.9.5 (sitting in tray after system start, all default settings nothing changed, just used as monitor)
Kinect (XBox-One version) SDK is installed, but not used, kinect not connected

Hardware:
CPU -> 			Intel(R) Core(TM) i5-3550 CPU @ 3.30Ghz (Intel 64 Family Model 58 Stepping 9)
Mainboard ->		Asus P8Z77-V PRO (BIOS Version 2104)
Primary GPU ->		Asus Strix GTX970 (GM204 Revision A1, VBIOS 84.04.1F.00.AS13)
Secondary GPU ->	Asus Strix GTX750TI-DF (VBIOS 82.07.32.00.AS7)
Sytem RAM->		24 GBs DDR4

Taskmanager Autostart Items: (including snarky remarks(tm) )
AiChargerPlus Application (Asus Mainboard USB port power control for phone charging)
AMD Dual-Core Optimizer (some game brought it and kinda needs it)
Avira Launcher + System Tray Application (free anti virus scanner)
Logitech Communications Manager (keyboard + mouse setup software brings this)
Realtek HD Audio Background Process (does magic for the onboard sound chip)
John's Background Switcher (freeware that switches desktop backgrounds at regular intervals)
Logitech Gaming Framework (installed by wireless headset)
Logitech KHAL Main Process (it's supposed to do... something)
Logitech SetPoint Event Manager (Unicode) (handles more useless mouse + keyboard fluff extras)
LVCom Server (another thing by logitech that does... something)
NVIDIA Backend
NVIDIA Capture Server Proxy
Realtek HD Audio-Manager (probably most people have it)
XBoxStat.exe (come with game pads and or kinect)

(all other listed startup items like itunes helper are hard set to deactive thus not relevant)


358.50	poser
-------------
ok


358.50	standalone
-------------
ok


358.91	poser
-------------
->Octane Log
CUDA error 999 on device 0: An unknown internal error occurred.
    -> failed to bind device to current thread
device 0: failed to initialize resources

->mainWacros
Traceback (most recent call last):
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\SetupForm.py", line 641, in EventOpenViewport
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\UiManager.py", line 5443, in ShowViewportForm
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\RenderManager.py", line 516, in StartRender
WindowsError: exception: access violation reading 0x000000002B4EFD20


358.91	standalone
-------------
ok


359.06	poser
-------------
->Octane Log
CUDA error 999 on device 0: An unknown internal error occurred.
    -> failed to bind device to current thread
device 0: failed to initialize resources

->mainWacros
Traceback (most recent call last):
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\SetupForm.py", line 641, in EventOpenViewport
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\UiManager.py", line 5443, in ShowViewportForm
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\RenderManager.py", line 516, in StartRender
WindowsError: exception: access violation reading 0x00000000286AFD20


359.06	standalone
-------------
ok


362.00 poser
-------------
->Octane Log
CUDA error 999 on device 0: An unknown internal error occurred.
    -> failed to bind device to current thread
device 0: failed to initialize resources

->mainWacros
Traceback (most recent call last):
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\SetupForm.py", line 641, in EventOpenViewport
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\UiManager.py", line 5443, in ShowViewportForm
  File "C:\Program Files\Smith Micro\Poser Pro 2014\Runtime\Python\addons\OctaneRender for Poser\RenderManager.py", line 516, in StartRender
WindowsError: exception: access violation reading 0x00000000275CFD20


362.00	standalone
-------------
ok


358.50	poser	(reinstalled after testing above)
-------------
ok


358.50	standalone (reinstalled after testing above)
-------------
ok