[eluser]CroNiX[/eluser]
For the version, you can echo CI_VERSION or look at the top of /system/CodeIgniter.php.
For the disallowed characters, check the setting for 'permitted_uri_chars' in /application/config/config.php. Make sure it is the same as your old one. If it is, make sure it has whatever characters that are in the url that are causing problems that are missing.
