I wrote to matej, who made the instances script, but got no response. He hasn't been here since december 2013 apparently...
I hope he is fine, because I have been also far from Blender and Octane for more than a year due to family troubles and not seeing someone for a long time is always worrying.
Thanks for the nice thoughts
Hey, guys. I'm getting back on track with Octane, after being absent for a longer period (working with Cycles).
I tested the following combo:
* Lionels unofficial exporter v1.17
* Octane 1.51
* My instances exporter script v0.19
Everything seems to work ok and just the same when I last used it. But note that in lionels exporter, I never ever used anything that had to do with materials, because I always set up materials inside Octane. Never used the "replace OCS" & "write mats. into OCS" options. The latter is a hack that was discouraged to be used exactly due to .ocs version compatibility problems.
The export instances script cannot function without Lionels exporter, so its not meant to be used in the official Blender-Octane version (unless you have also Lionels exporter active besides it). I've written a standalone .csv exporter script that works with any Blender version. Will post it later.