Elements 18 printer and saving problems

I see there have been similar problems. I had an older version of Elements and never had any issues. Guess I couldn't use it with Win10 so I purchased E 18.When I try to edit and save I get a "not enough RAM" message. It doesn't matter if I start with a 160KB photo. I have tried to print a photo without any editing and it says I need to select a printer. There is no option to select one. And I never had this issue with the older version. I don't get a printer box just the error message. There were some solutions mentioned in the forum but I'm not a techie. I didn't understand what I needed to do. I just know the computer is a couple of years old and I never have a problem with any other program. I used to use Elements a lot. But this version hasn't been used.  Hate I bought it...guess a year or 2 ago now.  I use Windows 10 and have 4 GB RAM.When I click on the Elements info it says Ver 16...not sure why if it's Elements 18. I have checked for updates. Please help.