Is there already an M3U in the folder?
Do you hare write access to the folder?
What happens if you run this version:
<?xml version="1.0"?>
<button display="both">
<label>Test</label>
<icon1>48</icon1>
<function type="batch">
<instruction>@NOFILENAMEQUOTING</instruction>
<instruction>Select PATTERN *.(mp3|ogg|flac|aac|wma) DESELECTNOMATCH</instruction>
<instruction>Echo #EXTM3U_"{sourcepath$|nopath|noterm}.m3u"</instruction>
<instruction>Echo {file$}__"{sourcepath$|nopath|noterm}.m3u"</instruction>
<instruction>pause</instruction>
</function>
</button>
It should open a window and print some filenames (with some stuff after them).
