If the default simulation is loaded and they press the Load button, rather than giving an 'invalid simulation id' error, just reload the default simulation since that is likely what the user is trying to do.
If the default simulation is loaded and they press the Load button, rather
than giving an 'invalid simulation id' error, just reload the default
simulation since that is likely what the user is trying to do.

aduffy70/VPCsim-Unity