'Upgrade' from Cyrus 2.3.18 to 2.4.17 - need to rebuild '.seen' files? - resolved

[Karl Pielorz]

Just as a final follow up - the '.seen' files turned out to be a 
red-herring.

In brief - if your 'cache' directory structure (i.e. for 'cyrus.cache') 
does not exist, a lot of the command line tools will 'segfault' instead of 
displaying something meaningful.

Sure enough - on the new server I'd set a separate meta-data partition, 
which didn't exist (thinking it was just for squat files) - however a 
config typo meant I was using:

"
metapartition_files: squat cache
"

Which was a 'fatal' error as none of the spool/user directories existed. 
Fixing this up (removing the 'cache' option) restored the command line 
tools to operation.

Regards & thanks to Bron for replies,

-Karl