Hello,
I have Indie 19.5 thru steam, and everytime i try to render hair or fur with mantra, i get " Error: Unable to save geometry for: /obj/myObject_hairgen/RENDER "

Any clues are welcome.

Hello again,

I have found my problem, but i don't understand why this happens?

I found that the problem exists until i change one default value in the "Hair Generate" Node.
Under the "render" tab, "hair Generation" appears by default on the "Generate geometry in mantra" setting.
When i change it to "Use SOP geometry", mantra renders the hair without problems.

I hope this can help someone.