Solved for me anyway....

I haven't been able to use the Queue manager to render animations for quite some time, its really put a kink in my workflow. I keep trying, a few scenes worked for some reason while others refused to start, giving a .bom error. So I've gone through a long drawn out process of elimination comparing what works with what doesn't. I've narrowed it down to hair shaders, the Poser12 shaders(Natural Blonde in my case) throw the errors while  simple Hair Mats(Simple photo texture) work. Works for me anyway... Can someone please confirm or debunk this...Hopefully the next service release will address this. The Queue manager is a very important asset to have working.

I am assuming that you are not altering any Material Room shaders to work in P12.  And is this a Firefly or Superfly rendering?  It is hard to tell whether certain nodes may be a problem for Queue Manager and if you are using proprietary products then you can't post their shader node arrangements.

Have you reported this problem to the support team?  It is the only way to prioritize the problem in time for the next release.

Superfly, no alterations to mat's  just double click to apply from P12 library.  I thought I had mentioned it in feature requests, but I guess I hadn't.  I know there was a thread here about the problem a couple months back.

I'll copy and paste this to feature request forum. Unless there's a better place to do so.

certain nodes cause that error in the queue manager . I found a couple of texture nodes cause it too. you'd probably be better off reporting it to support rather than posting here since this is a bug.

P12 is not being developed any further.  If this persists in P13 then it should be reported.