Secondly, things that DO NOT cause Internal Server Errors:
- Wakaba or Kareha themselves. Unless you've horribly mangled the scripts by hand, they will never cause an Internal Server Error. The only thing in the script file itself that can cause problems is the hashbang on the first line.
- Wakaba configuration. As a consequence of the above, no matter how badly you configure it, it should not cause an Internal Server Error.
- Missing software or modules. Missing mysql or ImageMagick will cause errors, but not Internal Server Errors. A missing Perl might, though, but that's not very likely to be a problem.