I'm in the same situation, I reinstalled Windows and didn't release the licenses before. Maybe I had an old version of skechucation since now I can only see assigned licenses, but I can't release them.
Is there any way I can regain access to those licenses? Thanks,

@toddakeson said:

When I create a new material in the material editor and attempt to rename the material, an error message pops up that says- "In vrayforsketchup.get_skp_material_by_display_name, couldn't find existing material named: DefaultMaterial" . I then press "ok" and SketchUp crashes.

Does anyone know why this is happening?

I get the same message but when i'm trying to rename a newly created two sided material. Sketchup doesn't crash in my case but instead I cannot find the new material in paint bucket and if i try to apply the material by selecting it and hit apply material to selection doesn't work either.
I just updated to the last version of Vray last week so the update is not a solution for me.
Anyone have clue?

Hello TIG , is it possible to fillet the corners marked in the attachment (R40) with 2d fillet plugin? I tried to use it but Sketchup keep crushing when I attempt to do it.