Alibre has learned that the Windows 10 October 2018 Update  will cause errors with Alibre Design. We recommend not installing this Windows update until this issue has been resolved.
How this Windows update affects Alibre Design:
Alibre received reports that a few customers who installed this update saw two primary issues:
- The ribbon interface in some workspaces is blanked out and unusable
- Actions that involve the File Explorer, such as Save or Open, can cause an error
For users that have already installed this update:
If you are on current maintenance, please update to Alibre Design 2018.2.0 and once installed, go to System Options>Display>General and uncheck the Use Glass Mode for Ribbon checkbox and click OK.
If you are not on maintenance and updated to Windows 10  recently, please revert back to the previous Windows Update 
This can be done by going to Settings -> Update & Security -> Recovery, then selecting the "Go back to the previous version of Windows 10" option.