Big issue - Please help :)

[Teivi]

Yesterday I installed this;
https://vborg.vbsupport.ru/showthread.php?t=199077

I uploaded the files incorrectly so that when you logged in you got this error message;

Warning: require_once([path]/madp/set.php) [function.require-once]: failed to open stream: No such file or directory in [path]/includes/functions_login.php(185) : eval()'d code on line 7

Fatal error: require_once() [function.require]: Failed opening required '/home/habbosto/public_html/madp/set.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/habbosto/public_html/includes/functions_login.php(185) : eval()'d code on line 7

I've removed all files associated to the plugin but can't access the admincp to remove the thing itself.

I've tried reuploading the functions_login.php file without any success.

Any ideas of how to fix this? Thanks!