Going back to the default settings after messing up a parameter value

[vln]

(20-08-2013 22:06)simoncn Wrote:  

(20-08-2013 21:50)vln Wrote:  tagFormat is set to "Album.displayFormat={$artist$orchestra$conductor}",which is what was set as default value / original setting.

You have the wrong setting. It should be:

Artist.displayFormat={$artist$orchestra$conductor}

Apologies - it's entered without the quotation marks. (as you suggest)