I’m working on a particular assembly and every time I try to create an in-context constraint, I get an error that says, “Solidworks cannot use selection. Allowing this selection would create conflicting contexts.
Another constraint is blocking you from adding the new one. That or the computer just needs to be restarted to try again. I was working in 2023 and there were several service packs that the IT department had on remote computers that we were connecting to for SolidWorks. Depending on the sp and the time of day I would get relation errors one day that if ignored would be gone the next.
The one day I showed up and my assembly opened in 1 min vs the 10 it usually took I looked at the service pack and sent the nastiest e-mail that I could to From all the times I told them to keep everything the same from the sp to the settings.