interface with HP printer not working any more
I use a 2 year old MacBook Air. A few months ago I started having problems with my HP OfficeJet Pro 8720 printer, with which Apple Support was able to help me. I was told that it had something to do with a change HP was making. Then another problem surfaced, and I no longer have free support. The message "HPDM.framework will damage your computer" appeared, and I can't get rid of it, although for a while I could still print. Now, when I try to scan, I get the message "failed to open ... (-21345)". Can anyone help please?
MacBook