I have an issue with NP++ v6.4.5 and file encryption tool EncFSWin v1.7.4 on my Win7pro32bit. With NP++ I can open only one text file at a time from mounted EncFS drives. With drag&drop or direct opening of another text file nothing happens (no new tab). Only when no other file from EncFS drive is opened in NP++, one (and only one) other file can be opened. However creating new files and saving them on EncFS drive is possible from NP++. All other files from non-EncFS drives are handled correctly.
I did a search for keyword EncFS in the this bug system, but did not find anything. Other editors like Jarte have no problem with opening multiple files from EncFS drive. I am not sure if this is a bug of NP++, but it looks like.