Finding a solution didn't take too long, as just this afternoon, a PlayStation Support team memeber wrote on the PlayStation forums to say the issue has been fixed.
"Hey guys. This issue should now be resolved," the staffer said. "Please try accessing your games again. If you are still having the issue try restoring licenses. If even after that you are still having issues, please let us know. Thanks!"
Sony said this issue only affected a "very small number of users."
Error CE-33945-4 is detailed in forum posts on NeoGAF and PlayStation's own social channels. According to personal accounts, users who encounter the glitch--and it's unclear how it's triggered--were blocked from playing games and DLC or accessing services like Netflix.
Did you run into the CE-33945-4 issue? And if you did, is it fixed now for you? Let us know in the comments below!