I set up a slightly more elaborate scene and when I changed something about the texture of the dress, the error came.
Neither reload nor anything else bring the renderengine back to work.
If you have saved, you can still render the scene after closing Daz Studio and rebooting.

Thomas

I also noticed in the Octane Log the msg "bogus scene path". I wouldn't have thought it possible for Octane to produce that Log event in the DazStudio plugin. Can you provide a screenshot of the Octane Log window scrolled up from that message?

I now have a new video card: Geforce GTX 1080 8 GB ...

I deleted Octane Render settings.ocz.
After a few material settings came again the error. It is saying it's running out of VRAM. 4GB is not enough to handle the geometry and textures you are using in the scene (together with the overhead that Windows requires).

Paul
I thought the "Out of Core ...

I deleted Octane Render settings.ocz.
After a few material settings came again the error.

I have 2 graphics cards: Video Chipset: 2X NVIDIA GeForce GTX 970 4GB
I'll try it with the deleting OctaneRender_settings.oczdb

Thomas

The data is actually in my signature anyway, out-of-core memory, I put on highest setting, but this setting is zero after each restart.
But even in the full out of core attitude, I had the problem.
Now I have returned to version v3.7.0.37 with the same old Nvidia driver v390.65 and this works so far ...

Octane Render for DAZ Studio v3.5.3.30
Current Nvidia driver version: v397.64

Loog:
11:24:53.417: +++++ Plugin running.
11:37:19.265: CUDA error 2 on device 0: out of memory
11:37:19.265: -> failed to allocate device memory
11:37:19.265: device 0: failed to upload data texture 4 of context 0
11:37 ...

Octane Render for DAZ Studio v3.6.5.33
Current Nvidia driver version: v397.64
Loog:
09:57:58.213: +++++ Plugin running.
11:10:55.006: CUDA error 2 on device 1: out of memory
11:10:55.007: -> failed to allocate device memory
11:10:55.007: device 1: failed to upload data texture 1 of context 0
11:10 ...

If I want to mess around with the textures, or render a more complex layout, the rendering engine gets stuck.
Even reloading the geometry does not change it.
I already thought my video cards were broken and have my old installed, but is the same problem.
Have my old Windows 7 loaded where once ...

Following is a pre-release of the next version of the plugin. There is an issue with the Octane 3.05.2 Daylight Environment node, so I will wait for the next Octane release before fully releasing the next DAZStudio plugin.

3.5.2.30
- Compiled with Octane 3.05.2
- Added support for Instances ...