It is possible that if a user experiences a system crash (blue screen) on their machine, the installation of Maple and/or MapleSim could get corrupted. If you find that your MapleSim model no longer simulates or outputs a number of unresolved names in the Diagnostic Information, a file could be missing from the installation.
Please check if a file named MaplesoftInternal.m is in the Modelica 3.2.2 folder. The folder path may vary based on the operating system. Please see below for the correct folder path.
C:/Program Files/Maple 2020/toolbox/MapleSim/lib/Modelica3.2.2
If the file is not present, please download the file MaplesoftInternal.m and place the file in the folder mentioned above. Relaunch MapleSim.
If the problem still exists, please contact Maplesoft Technical Support at email@example.com.