[TYPO3-install] Blank page after instead of install tool

[Michael]

Hi,

I recently had a server upgrade from FreeBSD 5 to 6.3.

On version 5 i have had Typo3 working. Now, with the newer OS i can't get it 
to work. I downloaded Typo3 src and dummy (4.2.1) and with correct symlinks 
i get only a blank page. If i try to open domein.com/typo3/install/ i get a 
HTTP 500 erro. After that, also in the root where the dummy is installed.

So, i figured, it's a permissions problem. As far as i know i checked 
everything. I followed the INSTALL.txt instructions ofcourse.

Has anyone any suggestions on how to get it to work on my system running 
FreeBSD 6.3, PHP 5.2.5 and MySQL - 5.0.51a?

Thanks.
Michael