Unicode Character Exception

Hi All,
I have a problem that i don’t know how to solve.

blockmesh error code :

"Runtime error (EncoderFallbackException): ‘ascii’ codec can’t encode character ‘\u142’ in position 110: ordinal not in range(128)

line 206, in _run_ironpython, “C:\Users\Paweł\AppData\Roaming\McNeel\Rhinoceros\6.0\scripts\butterfly\runmanager_bluecfd.py”
line 234, in run, “C:\Users\Paweł\AppData\Roaming\McNeel\Rhinoceros\6.0\scripts\butterfly\runmanager_bluecfd.py”
line 756, in command, “C:\Users\Paweł\AppData\Roaming\McNeel\Rhinoceros\6.0\scripts\butterfly\case.py”
line 788, in blockMesh, “C:\Users\Paweł\AppData\Roaming\McNeel\Rhinoceros\6.0\scripts\butterfly\case.py”
line 52, in script"

As you see my username has a unicode character, that isn’t supported by the script. What am I supposed to do? Is it possible to change butterfly directory?

#sendhelp still haven’t figured it out

@psapiecha Do you install BlueCore-CFD version 2017-2? If you have installed it,please try to run it as administrator and check it whether worked fine on you computer. And please upgrade Rhino 6.0 to the lastest version.