If you were to uninstall CS3 (never just "delete"!), that would mean that if you ever want to re-install it, you would first have to uninstall CC. Installers usually refuse to install older versions if they find a newer version installed.
Don't do that unless you have no more troubleshooting tricks left. I highly doubt that has anything to do with your issue anyway, but I could be wrong of course.
You never mentioned whatever printer you are using…
Printing from a different user is a very sound troubleshooting measure, and it takes a few minutes to set up a fresh, new account.