I have received this error before and usually I can restart SAS Enterprise Guide, but this time restarting hasn't helped.
I have been getting this error...
"NOTE 49-169: The meaning of an identifier after a quoted string might change in a future SAS release. Inserting white space
between a quoted string and the succeeding identifier is recommended."
... for any line of code I am submitting. The code I am using does not even include any quotes. It can be as simple as a Libname statement that still causes this code. Or it will sometimes just result in no Errors/Warnings/Notes/Output.