But, if I copy the same launch parameters to the "Command line parameters to mining softwere" in Awesome Miner, then the miner crashes when launched in the same way.
So it's not about the launch parameters.
Please remove all command line parameters ("Parameters to mining software") you entered for the Managed Miner. Awesome Miner should automatically setup the command line. If you try to put in the same parameters manually as well, you may end up with some parameters being set twice.
I tested various launch options - nothing helped.
Usually I naturally launch without any parameters and miner crashes, as I described earlier.