[horde] Problem with horde/imp - RH9

[horde]

I simply copy all required packets, descompact inside horde directory, but when I try login in horde, I got the error. I'm using imap authentication, and this are working fine.
In the browser are showed one blank page.
The /test.php works perfect (all modules are ok - Apache DSO).
I'm using apache 1.3.29, php4.3.4 , and lastest versions of imp/horde too. RedHat9.


Thanks,
Guilherme Carnevale