Hi, I previously sent this mail to the spambayes users list, without response. Apologies for the repost... I'm hoping it's more appropriate here:- I'm running spambayes (1.0.4-3) on Debian unstable with Python 2.4.4c0 and a custom compiled 2.6.17 kernel. I'm using an AMD64 chip. sb_server starts up ok and proxies pop3 and smtp connections ok. I can train from the commandline ok. The problem comes when I try to train it from the web interface (using either mbox or dbx format). It bombs with the following error:- ---------------- Traceback (most recent call last): File "/usr/lib/python2.4/site-packages/spambayes/Dibbler.py", line 470, in found_terminator getattr(plugin, name)(**params) File "/usr/lib/python2.4/site-packages/spambayes/UserInterface.py", line 494, in onTrain content = self._convertToMbox(content) File "/usr/lib/python2.4/site-packages/spambayes/UserInterface.py", line 536, in _convertToMbox content = oe_mailbox.convertToMbox(content) File "/usr/lib/python2.4/site-packages/spambayes/oe_mailbox.py", line 444, in convertToMbox if header.isValid() and header.isMessages(): File "/usr/lib/python2.4/site-packages/spambayes/oe_mailbox.py", line 117, in isValid return self.getEntry(0) == dbxFileHeader.MAGIC_NUMBER File "/usr/lib/python2.4/site-packages/spambayes/oe_mailbox.py", line 126, in getEntry self.dbxBuffer[dbxEntry * 4:(dbxEntry * 4) + 4])[0] error: unpack str size does not match format ---------------- I'm wondering whether this is something to do with my machine architecture and the sizes of datatypes? But I'm stabbing in the dark. I can easily disable dbx support by commenting out.. content = oe_mailbox.convertToMbox(content) .. around line 536 of UserInterface.py, and this does enable me to train on mbox format via the web interface, but I'd rather keep dbx support if possible. I don't speak Python so commenting out the offending code was about as far as I could go. Any ideas? Thanks, Matt