Never mind solved it

Can I just get a tip on how to get rid off the error 'file contains unknown nodes or data' and 'Errors have occurred while reading this scene that may result in data loss. Please check the script...

That fixed that problem for now, thanks Dave, much apppreciated.

It hadn't helped much I still keep getting this error whenever I load mental ray plugin
// Error: file: C:/Program Files/Autodesk/mentalrayForMaya2015/scripts/mentalrayUI.mel line 636: No object...

I am having a very annoying problem with mental ray. I have some xGen hairs on my model and whenever I go to render the image this error shows up
// Error: file: C:/Program...