missing key: categories: Cannot read the portsdb!

[Noah]

Hi,

Any clues how to clean up a reported "missing key: categories: Cannot 
read the portsdb!"

some more from the build logs:

cd: can't cd to /usr/ports/sysutils/portupgrade
[Updating the pkgdb <format:bdb_btree> in /var/db/pkg ... - 331 packages 
found (-0 +1) . done]
[missing key: categories] [Updating the portsdb <format:bdb_btree> in 
/usr/ports ... - 16436 port entries found 
.........1000.........2000.........3000.........4000.........5000.........6000.........7000.........8000.........9000.........10000.........11000.........12000.........13000.........14000.........15000.........16000.... 
..... done]
missing key: categories: Cannot read the portsdb!
database file error
--->  Installing 'gallery2-2.1.2' from a port (www/gallery2)
--->  Building '/usr/ports/www/gallery2'
===>  Cleaning for php5-5.2.0

cheers,

Noah