I've hust had a very strange experience installing 4.2.i.

I ran the bpg for D6 and no tabs appeared so I installed each package
manually.

I then tried to install Geoffs Enh comps and got errors like 'could
not install IBOxx_D7 because it contains ... which is also in
IBOxx_D6'.

I then looked in my bpl directory and found some D7 packages in with
the D6 ones. Looking at the package sources I saw a directive like
{$LIBSUFFIX '_D7'} - I changed these to D6 and eventually go it all
to install.

Then when I went back into the packages to find the exact name of the
directive to write this post . . they had gone!

Time for a lie down

Regards
Paul