Hi Roy, it appears you are having a few issues and there might be any number of solutions!
In truth, more information would be needed, for example what operating system is the printer now installed on (that is not working correctly) and what operating system did it previously work OK on? What version of the printer driver is in use? Are you using the genuine Epson software (such as Epson Scan or Epson Easy Photo Print) to work the printer?
Epson lists the current driver as being version 2.50 with a release date of 01 September 2016, although I can't see at first glance what operating systems it is compatible with. It might be possible to find older versions of the driver on third party download websites if it suspected that might be the issue.
You mentioned a system restore, but this wouldn't normally solve the problem as you state you have installed it on a new PC so there is no previous restore point available on that system when the printer was in a working state because the installer installed the updates. All that would happen would be the drivers etc would be uninstalled so you would simply install them again, possibly recreating the same issue. By the way, how did you install the printer/driver in the first place? Was it from your installation CD or from a download source? You could try uninstalling and reinstalling without an internet connection, which would stop the installation from updating, certainly whilst the internet was disconnected. There are also ways of stopping certain applications from accessing the internet, which would permanently stop your driver from searching for updates.
My Epson driver 'prioritises' errors, so it could very well be that a paper jam or a 'no-paper scenario' is deemed more important than incompatible inks and it's requesting the paper issue be sorted first. In all probability once the paper problem has been sorted you might very well receive the 'incompatible inks' error again.
As for suggestions... erm... if I was having the same issue I would shut down both printer and PC completely and boot them up again to see which error reappears. Then I would uninstall the printer driver and reinstall it, again to see what errors reappeared. As I mentioned above, if you have the drivers on a CD and this worked on your previous system, you could try uninstalling the drivers, disconnecting the PC from the internet (by switching off the router for example) and then install from the disc - this would ensure that the disc's driver would be installed and not an up-to-date one from the internet. Failing that I would probably then go on the hunt for an earlier alternative version of the printer driver and install that.
Other than that and without further technical information I'm not sure what else to do, but hopefully someone else can help
Good luck!