Hey guys, I'm in the same situation as @ollyk2. I also use Cura instead of Flashprint with the "profile" from thingivers and everytime I try to manage my materials I get the same error message like ollyk2. This is the "profile"/instruction by ArteFlux I used to generate gcode in Cura suitable for the Creator 3 printer:
https://www.thingiverse.com/thing:4574596
I'm actually not good in programming, but I guess there is a problem within the SettingsDefinitions.py file in line 757.
File "UM\Settings\SettingDefinition.py", line 757, in <lambda>
"float": {"from": lambda v: str(round(float(v), 4)) if v is not None else "", "to": toFloatConversion, "validator": Validator},
TypeError: float() argument must be a string or a real number, not 'SettingFunction'
Maybe someone can help.
Thanks!