Exception: Simulation terminated with error after successful simulation

[bresait]

Hey,
Using buildingspy v3.0.0, I am getting the following exception after an apparently successful simulation.

*** Error: Log file contained the line ' = false'
*** Error: Simulation failed in '.'
   Exception: Simulation terminated with error. Check .\simulator.log..

Simulator.log contains the following:

RunScript("c:/program files/dymola 2021/insert/dymola.mos", true);
 = true
Successfully loaded settings file C:/Users/xxx/AppData/Roaming/DassaultSystemes/Dymola/2021/setup.dymx
RunScript(".\\run.mos");

// File autogenerated by _get_dymola_commands
// Do not edit.
//cd(".");
openModel("Modelica\package.mo", changeDirectory=false);
 = false
Modelica.Utilities.Files.remove("simulator.log");
OutputCPUtime:=true;
modelInstance="Modelica.Blocks.Examples.PID_Controller()";
Declaring variable: String modelInstance ;

simulateModel(modelInstance, startTime=0, stopTime=3.2, method="dassl", tolerance=1e-06, resultFile="PID_Controller", numberOfIntervals=100);
 = true
savelog("simulator.log");

I am under the impression that the error is raised because of the ' = false' in

openModel("Modelica\package.mo", changeDirectory=false);
 = false

which I am not sure how to understand.
The simulation runs without any error (as also checked with showGUI(show=True) and produces fresh .mat results.
Is this expected behaviour?

[mwetter]

Thanks for reporting. This will be corrected through #473