Been having some problems in terms of saving completed models which the computer says it can not open because the MDM Black file cannot be found. This doesn't make sense to me because I have never been able to make changes or interact to either MDM Black or MDM Blue. I suppose they are parts as they are listed in the model tree but they don't show up when I click on them nor can I edit them. Currently they show up on some models in my server but not all, pushing me to find out what they are and what they might do. I have already searched online for what they might be in relation to Solidworks but so far I have come up empty handed. If anyone can help thaaat'd be great.