install.php won't run

[swissmom1]

I am just trying to install photopost for the first time. I have before installed a phpBB2 forum, and coppermine myself without difficulty, so I am not completely new to this kind of thing.
Anyways, I have followed all the steps in the instructions, checked for compatibility.
But am having trouble at step 4.
I uploaded all the files, set the permissions, but when I try to open
the install.php file through my browser (firefox) (www.scrapbookseite.com/photopost/install.php) I get the following error:
Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, robmonwebster@sympatico.ca and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.
The server admin that is me,lol. The error log says the following:
[Sat Jan 06 23:25:44 2007] [error] [client 70.48.250.133] Premature end of script headers: php-script.

Any idea where I went wrong?

Edited to add I use php version 4.3.10, mysql 3.23.58
My webhost is canaca.com, I believe it is a shared server.

[Chuck S]

You uploaded the files and did you remove the .NEW extension off the config files?

[swissmom1]

No, I did not see in the instructions that I had to.
Thanks.
So do I rename them?

[Chuck S]

Just remove the .NEW off the end of both config files and you should be fine. They also need to be writable to 666 but that should be in the instructions.

[swissmom1]

Ok, I did that, and checked the permissions. But it still won't work. Same error.

[Chuck S]

You have a url?

That error suggests an issue with your server's PHP setup or the scripts are corrupt. Your PHP files are 644 right?

[swissmom1]

I have uploaded the files to www.scrapbookseite.com/photopost

All the php files are set to 644 (other then the confiq files)

[Chuck S]

That issue suggests a server issue with your PHP config

Make a phpinfo.php file with this contents and upload it to your photopost directory

<?phpinfo();?>

We can then see if a simple php file runs

[swissmom1]

http://www.scrapbookseite.com/photopost/phpinfo.php

no luck

[swissmom1]

But this worked when I originally tested to see if if it was compatible:
http://www.scrapbookseite.com/phpinfo.php

[Chuck S]

Then there has to be something or some htaccess file or something making PHP not work within that directory if a phpscript will not run there. What is the permissions of the photopost directory 755 right?

[swissmom1]

actually it was set to 777 and I just changed it to 755
and now http://www.scrapbookseite.com/photopost/phpinfo.php works.

[Chuck S]

There you go then you caused your own issue with permissions being set wrong. I would suggest you delete the directory start over and just set permissions on the directories and certain files we note in the install doc.

[swissmom1]

Thanks, I will try that.

[swissmom1]

Thanks so much, starting over did the trick, the install script is now running.