Installation went perfect... until login.

[epsilon6]

I installed CalemEAM.  My scripts went perfect.  When I try to login to CalemEAM using any username or password, I get an error:

An error happened in the server.  Please contact your system admin.

I am running Linux and CalemEAM-r1.0.1x-Beta.  Can anyone help?

Where do I look for the logs?

[calemadmin]

Logs to check:
- calem.log under CalemEAM/logs/
- php log, under Apache (depends on your server setting)

Take a look at these two logs.