Hello, Im from germany, can somebody help me please,

i've installed WEC without problems in a subfolder named "htdocs/wec/". I've acces to backend but i always get a "HTTP 500 internal server" in the frontend. If i make the wec_servercheck.php in the htdocs/wec/ folder i get the same error, but if i call up wec_servercheck.php in htdocs/ it works well...can anybody help me please..

-= PHP Scripting Test =-
OS FreeBSD Passed
Version 5.2.5 Passed
Server API cgi Passed
Max Execution Time 60 Passed
Memory Limit 100M Passed
Max Upload Filesize 20M Warning
Max upload file size (20M) is larger than allowed POST data (8M).
This is okay, but the upload filesize will be limited to 8M. Consider raising
post_max_size to at least 20M to take advantage of larger file uploads. This can be
set in the php.ini configuration file if you can access it, or ask your hosting company to do so.
Required Functions success Passed
max_traversal success Passed

-= Email Test =-
email sending via mail() info Passed

-= MySQL Database Test =-
Status Running Passed
Client Version 5.0.37 Passed
SQL Safe Mode Passed
Persistent connection Success Passed
Server Version 5.0.37 Passed
Host Info Localhost via UNIX socket Passed

-= File Permissions Test =-
777 Permissions allowed No Passed
Minimum write permissions 0755 Passed
Symlinks Success Warning
When you install TYPO3, either use the .zip package or make sure that you copy the
index.php file from typo3_src to the TYPO3 root.

-= Apache Web Server Test =-
Version 2.0.63 Passed
mod_rewrite unable to determine this setting due to the server configuration Warning
mod_security can't determine Warning
Allow Override Success Passed
Rewrite URLs success Passed

-= Graphics Test =-
GD library found Passed
GraphicsMagick library found Passed
ImageMagick library found Passed