The CMS comes with some default server config files in the /cmsb/ folder named .htaccess, .user.ini, and php.ini. These config files attempt to reset PHP and Apache settings to standard values and turn off deprecated or problematic features that would otherwise cause errors or problems.
These files aren’t supported on all servers, but on many they will prevent problems. However, they are OPTIONAL and you can safely remove these files if needed.
If you are getting errors on install try each of the following steps until the errors stop occurring:
1) Disable /cmsb/php.ini by renaming it to php.ini.disabled
2) Disable /cmsb/.htaccess by renaming it to .htaccess.disabled
3) Disable /cmsb/.users.ini by renaming it to .user.ini.disabled
4) Contact support