another fck... posting data

[eluser]wildcard99[/eluser]
Hello, I got Fck working but when i try to post my form.. i get the following error.

Fatal error: Call to undefined function get_instance() in C:\xampp\htdocs\system\libraries\Input.php on line 855

any help!?

[eluser]CoolGoose[/eluser]
What's your code?

[eluser]Lone[/eluser]
And have you searched yet? Found many results on this topic:

http://ellislab.com/forums/viewthread/70371/

http://ellislab.com/forums/viewthread/66971/