Error message

  • Warning: preg_match(): Unknown modifier '2' in os_check() (line 252 of /var/www/custom/tools/tools.inc).
  • Warning: preg_match(): Unknown modifier 'T' in os_check() (line 252 of /var/www/custom/tools/tools.inc).
Result
Help, how do I get the frost off my windshield?

I used my discount card but could only get 20% off.