I have an assembly which I can verify all instances successfully, then open an instance and have a part or sub assembly fails. Sometimes I can just say redefine then accept making not change, and it will resolve failure, sometimes it won't resolve. So I'm looking at the part, and it has yellow light. Can someone describe what this means? Sometimes I can right click on it to get details, sometimes not. So now I'm looking at a part it has a yellow light, fresh from common space, and not modified, then I regenerate and light turns green. Am I going to have to check in this part, with just regeneration so it has a green light?