I have laid out a new Schematic which is a flat drawing with 4 schematic files. I have used Global Labels to link a wire from one file to another. It seems like most of the schematic wires connected successfully from one page to the next. One particular ERC is “Pin connected to some other pins but no pin to drive it”. This is on a schematic where I am inputting a Global Label directly to an IC pin. The IC pin is set up as and Input, and the GL is set as an input.
The direction of a global label is not taken into account by the ERC, it is just for you as a user. The ERC runs on the netlist effectively, so all global labels are just wires at that point.
That error is common if you have a passive component like a resistor or capacitor between the input pin and whatever signal is driving it.