I can not paste anything into a newly created Evernote. I'm on a PC (Windows 7), not a Mac. The source of the text is just the plain old text editor. I copied from a web page and pasted to the the simple text editor (called Notepad). Then I highlighted the text in Notepad, copied it to buffer, and attempted to paste to Evernote. It fails to respond in any way. Then I went to an older (pre-existing) note and was able to paste into that note.
So -- the issue is NOT specific to Mac; NOT related to formatting; NOT related to the source of the text (i.e. what application it was copied from), and IS related to the difference between a new note and an old note.
I exited Evernote client, and restarted it, and I still can NOT paste into the "new" note. So there is something durably wrong with the "new" note, even after it is not so new anymore. The defective note is already synced to the cloud since I can open it on my iPhone. But, still defective for receipt of pasted text on the PC inside the client. The client version is: 6.5.4.4720 (304720) Public. So I updated to New version: 6.6.4.5512 (305512) Public. EXACT SAME BEHAVIOR. I'm stumped and a bit upset. This is useless without being able to paste.
I found that I could type in Evernote several words, then copy those words, and paste them even into the note that will not receive text from outside the note. So it seems to care if the buffer was filled inside Evernote vs outside evernote.