Since you are trying to learn something, consider the following:
All voltage nodes in PSpice, and indeed SPICE, need a path to the 0 node, if you want "isolation" provide a path, like a 1G resistor to the 0 node. Now take another look at the primary circuit, why might the nodes be "floating"?
Error messages convey information - "Voltage and / or inductor loop" - wound components have back EMF, modelled voltages sources have no internal resistance, oops! infinite current possibilities, as the message says "add a resistor" between the voltage source and the inductor to break the loop, "real" wound components have series resistance, models are ideal, try a 1 ohm resistor in the primary circuit and see if that helps, you can always reduce the value, the resistance value can be "small" but it can't be zero.
Name the circuit nodes with a net alias, Place>Net Alias, you don't need anything to taxing, use IN, OUT, and A, B, C and D if you can't come up with anything better. It will be much easier to locate a named net than a system assigned "N" net name default.
In recent versions, like releases since about 2001, you can't "drop" components onto wires and break them, draw the connections "properly", things are usually in a bad way if the schematic is littered with Junction Dots at component pins.