I design Plastic injection molds. My method of creating core,cavity, slides, etc. is to place the part with shrink fixed in an assembly and use the "cavity"(boolean) function in conjunction with extrudes and cuts referencing the part edges and faces to create the components.
So this works, I save the file, I add KOs,H2o,screw holes, etc. Save the assembly and exit. If I open the file the next day there are errors all through the feature tree where ever I had referenced the part file. I have to go back in and re establish the references (converted edges, faces to extrude up to, offset entities, etc.) I'm in 2016 and I came from 2011(it never used to happen in 2011) We get all the new releases I just think they aren't worth the trouble dealing with all the bugs. Here's the real kicker after I've re-establish these references They're fine from there after. Anyone get the same behavior?
Hi Brian. this is likely down to the search routine SolidWorks goes through when opening files - do you think you have files on your system with duplicate names but in multiple folders? If so it could be hat Solidworks is finding the referenced file in a different folder that the expected version based on the routine. Check Tools > Options > File Locations > Reference Documents to see if any folders are in there- as these interrupt the natural search routine and have a higher priority. Also check Tools > Options > Messages/Errors/Warning. there may be a dismissed message in the list which needs restoring that could affect the behaviour, so restore them all, reboot Solidworks and try again.
Other than that if this is reproducible only overnight, and not during the same day if you reboot SolidWorks, see if there is anything happening on the server (assuming this is where your file are stored) overnight like a virus scan, or encrypting software that could be altering the integrity of the files in some way.