Try running Epson Scan as administrator. Right click the Epson scan launch icon/Run as administrator. So far, this has stopped Epson Scan from crashing for me and it appears to work normally even with the new 1803 Windows update. I hope this will help others as well.
Kind regards
Chris
PS I also received a reply today from Epson support that the latest Windows update has affected most of their products and they have escalated their support to find a fix as soon as they can.