Simulation Error DDSPB24

Hey everyone,
I started a I started a historical dynasty starting in 1996, when try and simulate the season I get this error (below) every time.
Microsoft .NET Framework
Unhandled exception has occurred in a component in your application. If you click continue, the application will ignore this error and continue.
Object not reference not set to an instant object.
When I click continue it doesn't do anything, and won't let me sim to the next day and I lose all my progress.
Can anyone help? Thanks!
I started a I started a historical dynasty starting in 1996, when try and simulate the season I get this error (below) every time.
Microsoft .NET Framework
Unhandled exception has occurred in a component in your application. If you click continue, the application will ignore this error and continue.
Object not reference not set to an instant object.
When I click continue it doesn't do anything, and won't let me sim to the next day and I lose all my progress.
Can anyone help? Thanks!