I am using Inventor 2013 with Vault Pro 2013. We have a few custom materials and apperances set up to make everything as realistic as possible. Last night I checked in my assembly, a truck chassis with a tank mounted on it. I believe in the upper level assembly I made a couple appearance overrides on brackets and the frame. This morning the entire cab, wheels, anything in the chassis assembly is black. When I open the chassis assembly, everything is as it should be. I've tried to clear the appearance override but it won't allow me to select the items I want. Select all also does not help. We have had this issue before. What would cause this? There is only two of us working here and it doesn't sound like the other guy did anything that shouldve affected this.
See attached pictures.
Thanks.
![Autodesk Design & Make Report](https://forums.autodesk.com/t5/image/serverpage/image-id/1350519iCB55845EBFC43016/image-size/large?v=v2&px=999" "Autodesk Design & Make Report")