Please check the expression for the
System Load Shape variable under the high-level
Load Shapes branch. It may be missing. This variable used to reside under each Transformation module but it's been moved as part of the reorganization of load shape calculations. The expression may not have been correctly migrated when your area was updated. I've tried to make the migration process automatic, but it may not succeed 100% of the time.
Thus, you may need to reenter an expression for the System Load Shape variable (you may simply be able to use the expression "ShapeDefault"). Check also whether load shapes are just shown for electricity or for multiple fuels. You can control that via the
Settings: Scope & Scale screen. For more info on the recent changes,
see the What's New page (scroll down to changes listed for v2020.1.93).