hi this is my first post.
i'm using ReplayGain 0.84 and mppdec 1.95e (in the same folder, of course...), i get this error: Can't decode 'C:\...\fil.mpc'
my MPC was made form an APE with quality --insane. MPCScan say my file is ok.
I have no tags on MPC. in fact, tag.exe --remove file.MPC say "1 error: no tag to remove"...

what i can do? where i wrong?

Thank you in advance

Try putting mppdec.exe into c:\Windows.

works!
thank you a lot
another question...do you think is better QMP or foobar to benefit replaygain?

I don't know what you mean exactly, but i'll say foobar2000 nonetheless