I have discovered a bug in version 1.8.4.1185:
The MultiscaleLinearTransform and MultiscaleMedianTransform tools don't work correctly when executed multithreaded. This is a stupid error that will be fixed next Monday morning with an update. I can't understand how this error has gone unnoticed during tests. I apologize for that.
Workaround: Before running MLT or MMT, disable parallel execution. To do this you can enter the following command on the Process Console window:
parallel --disable
To re-enable parallel execution:
parallel --enable
Sorry for this nasty error. As I've said, it will be fixed next Monday morning with an update.