This effects all current & beta versions.

If you use a hash at the start of a filename it will fail with FLAC decoding,
e.g. file "- Please Please Me.flac" would fail.  Try it yourself from a command
line.  Whilst they are ugly and extremely rare (I found my first 1 yesterday)
they are still valid Windows filenames, however reading the FLAC documentation
comes up with a solution (http://flac.sourceforge.net/documentation.html#flac )

<quote>
To encode or decode files that start with a dash, use -- to signal the end of
options, to keep the filenames themselves from being treated as options:

    * flac -V -- -01-filename.wav
</quote>

So for example this statement in convert.conf:

flc wav * *
	[flac] -dcs --force-raw-format --endian=little --sign=signed --skip=$START$
--until=$END$ $FILE$

Should be changed to:

flc wav * *
	[flac] -dcs --force-raw-format --endian=little --sign=signed --skip=$START$
--until=$END$ -- $FILE$


A rare problem and of course most would change the filename, but hope it helps
and is implemented.