Can run test but can't run simulation.

[MeinhardMark]

Great work!

I tested installation with "./bin/mpettest.py" as demonstrated in the documentation, and it worked just fine with all 35 passed.

But when I try to run a simulation with configs under ./tests/ref_outputs/benchmark_*, it shows following error:

Traceback (most recent call last):
  File "d:\work\mpet\bin\mpetrun.py", line 28, in <module>
    main.main(sys.argv[1])
  File "d:\work\mpet\mpet\main.py", line 192, in main
    run_simulation(config, outdir)
  File "d:\work\mpet\mpet\main.py", line 79, in run_simulation
    simulation.SolveInitial()
RuntimeError: Miscellanous exception in function: daetools::solver::daeIDASolver::SolveInitial, source file: .\ida_solver.cpp, line: 955
Sundials IDAS solver cowardly failed to calculate initial conditions at TIME = 0; IDA_CONV_FAIL
IDAS solver error in module 'IDAS' in function 'IDACalcIC': Newton/Linesearch algorithm failed to converge. [IDA_CONV_FAIL]

I then tried to manually replace the daetools.cfg in the environment with the daetools_config_options.txt under ref_outputs/benchmark_*/sim_output/, still receive the error above.