Condition:
This issue is related to Altair Monarch Complete / Altair Monarch Classic fails to open and error "An Unexpected error occurred during the startup" message box appears when starting the application. The error log mentioned contains the following error: "No FontFamily element found in FontFamilyCollection that matches current OS or greater:"
Cause:
The cause of this issue is the rollout update by Microsoft that makes the GlobalUserInterface.CompositeFont corrupted.
Remedy:
Replacing the corrupted GlobalUserInterface.CompositeFont file with the correct version will fix the issue.
Steps to Follow:
1. Download GlobalUserInterface.CompositeFont (default download for Windows 7 is %USERPROFILE%\Downloads).
2. In Windows File Explorer Copy and paste the GlobalUserInterface.CompositeFont file which was downloaded in the previous step to %Windir%\Microsoft.NET\Framework\v4.0.30319\WPF\Fonts.
3. Copy and paste the GlobalUserInterface.CompositeFont file to %windir%\Microsoft.NET\Framework64\v4.0.30319\WPF\Fonts.
4. Re-launch Altair Monarch Complete / Altair Monarch Classic application.
