I have this problem on 2,53c version and 2019 too, im using windows 7.
2.53c just gives an error message and cretaes a log file
2019 creates an infinite cascade of windows that cant be stopped other tha restarting the session or the pc
Does someone else have the same error trying to import dxf?
I follow every rule of the dxf import/export procces, version 2000, break polylines etc.