At times it is possible that due to system/app/printer manufacturer settings we do not get the desired print output. In such cases it is wise to choose printer manages color and then choose appropriate color profile to print with. You can also try printing from Elements Organizer with same settings and check if it is fine.
You might want to read these before trying and knowing more:
Hopefully resetting the printer preferences to default and then changing the settings as appropriate like paper type etc should help.
Also found one of the similar discussions with Epson printer for green cast : http://www.pentaxforums.com/forums/digital-processing-software-printing/57695-grey-areas-g reen-epson-stylus-photo-1400-a.html - Do read this as well.