Installing Drupal

I just finishd a new 4.5.2 install. Everything looked good. (installing Drupal - is so nice its almost a pleasure).

Then I moved over some themes, I had worked up for another project.

Now I get a 404 on the home page.

What silly thing did I do and where should I look to fix this ?

I don't recall themes having home (index) pages - I thought they were just pretty eye candy.

thanks

I have just done a clean install of 4.6CVS and am gradually adding some of the more useful components that I have been running on my 4.5.2 installation. I have added phptemplate engine but get the following warning in the themes admin area. None of the phptemplate-dependent themes appear (e.g. box_grey, friends_electric) event though they are installed.

"Warning: Missing argument 1 for phptemplate_templates() in c:\program files\apache group\apache\mydocs\drupal46\themes\engines\phptemplate\phptemplate.engine on line 62."

Line 62 says:

I am quite new to Drupal, but already I like it a lot. I have two installations of 4.6RC up now, and I think I will convert all my postnuke sites into Drupal eventually.

As of yet I have only found two problems with the basic taxonomy system of Drupal:

I am new here and each time I insert a login code, It does not work...

I got this message each time:

Warning: Cannot modify header information - headers already sent by (output started at http://rayden.3nv.com/.header:2) in /home/vhosts/rayden.3nv.com/login.php on line 5

I know that is something related to session that cannot be modify when the user insert a username and a password..
Can you help me please?

Invalid argument supplied for foreach() in /var/www/finux/modules/glossary/glossary.module on line 405.

This error is showing up on 'some' of my pages after populating the new glossary-cvs on 4.6RC.

How can I add more than one user to a project which we can assign issues to?

I'm sure it's obvious, but I'm going in circles.

Thanks,

-max