just did a normal installation, next, next, .... install the drivers that it ask for.
first run I pick a custom printer, don't have one printer but going to buy a anet A8, so I put the data of that printer.
the program start. after a 1m or so it hangs. Stopped the process and tried it again. splash screen then hangs.
delete the .cfg file and run it again. splash screen then ask me for me printer and after that... hangs again.
I agree with you, I think its some thing related with the printer parameters.
have this line on the logs but i don't know if it is normal
"WARNING - [MainThread] UM.Qt.QtApplication.__onQmlWarning : file:///C:/Program Files/Ultimaker Cura 4.1/resources/qml/Menus/MaterialMenu.qml:16:44: Unable to assign [undefined] to QString"