I have a brand new Macbook Pro with 16 GB of memory.  With some emails that I reply to, I get an error "not enough memory".  It has happen when the reply to to one person and it has happened when replying to a group of people.  Once that email is "corrupted", I can not get it to send at all.  I can send new messages to that person.  When this has happened, I have logged into Gmail to respond and that works fine.  None of these emails had attachment or were large .

This is very annoying. Is there a fix?  Thanks!