Original message body is missing in reply, only its header is present
 

I have been using OE6 on WindowsXP for years. Today something mysteriously
changed, without obvious reasons. Until yesterday, when starting to write a
reply, that reply message would initially contain the entire original
message. However, today the reply message contains only the header of the
original message; and the message body of the original message is missing
(and parent messages below the original message are missing as well). This
happens with all replies, and with all forwards. Does anyone have a
suggestion?

(The option "include message in reply" is still enabled)