Preferences - Default Files - file window not opening
In Preferences > Score, the file-open buttons don't do anything if the text in the adjacent text box starts with a colon (':'). This is the default state in Instruments list 1 - it starts with ":/data/instruments.xml" (Having altered this text and tried to remember how to put it back, the slashes maybe should be backslashes, but it makes no difference to the issue.) In order to select a new instruments file, I have to clear the text box first.
BTW, am I right in thinking the default instruments file is in fact a hard-coded one (or stored somewhere I can't find), not the one at C:\Program Files\MuseScore 2\instruments.xml? (I'm using Windows XP.) It seems the one in Program Files/... is just a base that users should use if they want to edit the instruments file.