Log-in issues, TPP installed on Unix Debian

[Gash]

Dear all,

Please allow me to thank you for your help in advance!

We have successfully installed TPP 4.3 on a Unix box - Debian. After
necessary configuration (following SPC's tutorial), we can see the
tpp_gui.pl through a web browser (http://.../tpp/cgi-bin/tpp_gui.pl).

However, we could not log on to the TPP system at all. Every time,
after entering the password, the error message displayed on the TPP-
login page is "User guest not found. Please check your user name, or
log in as guest".

As requested by the tutorial, we have installed Apache 2 and Perl
before installing TPP. Also, when trying to log on TPP, we had not
recorded any error message from Apache.

Could anyone please help? I need to demo TPP in this week and would
really appreciate it would work okay on Unix system.

Best regards,
Gash