Why does it prompt that it cannot be saved when clicking Save

The following reasons may lead to unsuccessful saves:

1. Unstable network conditions can cause the save to fail.
2. Naming a space using spaces or special characters.
3. Cabinet names or part names that contain special characters or spaces.

You should first click on the top menu item “File” – “Save local” to save the file to your computer. Then, try disconnecting and reconnecting to the network, reopen the file, and save it as a different file.