There are significant differences between the behaviour of multiprocessing on Unix and Windows. This has caused issues with Monte Carlo calculations.
Need to set the project in each Monte Caro worker process.
This might be fixed in commit e217412.
This is now working in most cases, but not in tests on Windows, because each worker sets up its own temp directory, which doesn't have any LCI data... more work is needed.
Fixed in 1.3.3. See 4bba848 and the ~10 commits before it.