dovecot+ squirrelmail empty page after login

[necrosaro]

I'm using dovecot as imap server and it's working without problem. recently i installed squirrelmail. after installation, I did ./configure in /usr/local/www/squirrelmail and save. the problem is, I can log in without problem, but after login the frame is empty no inbox, no nothing. I followed FAQ in squrrelmail about dovecot, but still no luck.