SolidWorks® Type-Libraries / Installed Version of SolidWorks
Each version of SolidWorks uses a different Type Library file.
In the image :
•SolidWorks Type Library: 2021
•Installed Version ofSolidWorks: 2021
When the year is the same, you are All good to go.
If the versions are not the same, then Run as Administrator when you start MechDesigner, and check again.
Note: From MD15 - the correct Type Libraries are installed automatically with your installation, and it checks which version of SolidWorks you are using each time you start MechDesigner.