"failed to include" messages in preferences

[Hanser, Kevin]

I've just finished installing IMP 2.3, following the instructions contained
therein... but whenever I try to change anything in preferences, I get
messages like these:
Warning: Failed opening 'templates/prefs/text.inc' for inclusion
(include_path='./:/usr/local/lib/php') in
/hdb1/usr/local/apache/htdocs/horde/imp/prefs.php on line 240


what did I forget?
Or is this one of the imcomplete parts of 2.3?  That file doesn't seem to
exist... :)

Thanx

Kevin Hanser
System Administrator
Merchant Internet Group
kevin@MerchantInternetGroup.com