I'm trying to use the setup utility with Amiga Explorer and whenever I try the "Type SER: to RAM:Setup" command, I get the "Can't open ser:" error.
I've checked the pinouts of the null modem cable and its completely fine. I've also tried an old laptop with a serial port on it, that didn't work either (I've been using a USB to serial adapter with my modern laptop otherwise). Also if I just type in "ser:" in the cli, amiga explorer is able to transfer some data to the amiga but I get an Amiga explorer window on my amiga with the serial settings along with another window that says "Serial can't connect". Sounds like a problem with my amiga.
Maybe there is something interfering with serial communication? This amiga 2500 was pulled out of a school environment, so maybe they put some sort of startup script to limit the use of the serial port? I don't know enough about workbench or amigados to understand the startup-script in the s: directory.
One thing I'd also like to point out is that one of the pins on the serial connector is slightly bent, but this doesn't seem to stop the serial cable from connecting to the computer. So I don't think that's the problem either.