Did the script do any CHMODing of any kind? Most times you get a 500 when a file or folder is not CHMODed correctly. Try CHMODing to 755. If that fails, uninstall and try a manual install.

nope... still doesn't work. i tried to folow programmer's instruction, but it still doesn't work
1) DIR   phpwcms_tmp/thumb_list                    777
2) DIR   phpwcms_tmp/thumb_preview                 777
3) DIR   phpwcms_ftp                               777
4) DIR   phpwcms_filestorage/1...10                777
5) DIR   content/images                            777

6) FILE  setup/setup.conf.inc.php                  666
6) FILE  include/inc_conf/conf.indexpage.inc.php   666
7) FILE  phpwcms_template/inc_css/frontend.css     666
FILE  phpwcms_template/inc_default/startup.html 666

All other files listed above can set to 644, directories to 755. Sometimes it can help to set mode to 766 for the following directories: phpwcms_tmp, phpwcms_template, phpwcms_ftptakeover, inc_css, content. If you have further access problems try to set all files and directories to 777 (not recommend). - did not tried this

i got couple of lines of this code:


should i just erase it and install manually?

I really don't see a reason for that line in the .htaccess file so you would probably be safe just removing it from your .htaccess file.