Imp 2.2.3/Horde 1.2.3/Postpone-Draft issues

[Joaquim Homrighausen]

On the server where the above is installed, I cannot postpone a
message (i.e. have it saved to the drafts folder). Nothing
happens; no error messages, nothing. The compose "screen" is
simply cleared. Nothing appears in the drafts folder.

The actual IMAP server being accessed is another machine, where
an older version of Imp/Horde is installed. Logging onto the Imp
on that machine, it works just fine.

If I remove the drafts folder physically, it can be recreated by
postponing a message (when I log on to the old version of Imp).
I cannot recreate it by following the same steps logging onto the
server running the current version.