Generic forum to discuss Octane Render, post ideas and suggest improvements.
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Please add your OS and Hardware Configuration in your signature, it makes it easier for us to help you analyze problems. Example: Win 7 64 | Geforce GTX680 | i7 3770 | 16GB
Probably not the issue, but try re-installing the nvidia drivers. I had an issue where the openGL files got corrupted somehow and the preview window would just be black. Granted I had a message popup saying so, but there might be something with the different OS's.
System 1: EVGA gtx470 1280Mb and MSI gtx470 1280 in Cubix Xpander for Octane, AMD 945, 4Gb Ram
All systems are at stock speeds and settings.