Is there another way i can use those components with joomsef without waiting for their extensions to be developed???

regarding docman, when i'm trying to install its extension i got this error:

Warning: require_once(/home/***/***/****/libraries/joomla/installer/adapters/sef_ext.php) [function.require-once]: failed to open stream: No such file or directory in /home/***/****/***/libraries/joomla/installer/installer.php on line 216

Awesome Auger