The plugin with Notepad++ v6.3 seems to kill all the standard icons. http://sourceforge.net/p/notepad-plus/discussion/331754/thread/6a562340/ -- I found the same thing -- all my icons reappeared when I removed Customize Toolbar. They disappeared again when I reinstalled it. Also, when I was trying to figure out what was wrong, I used Customize Toolbar to add buttons (because I wasn't seeing any) and it worked fine -- till I closed Notepad++ and then reopened. Still no standard icons/toolbar and all the other buttons I'd added through Customize Toolbar were no longer there.