error message on page save

I get the following error messages when I save edits on pages. Cannot figure how to to stop it. For some reason when i press 'save' it brings me too the install page for an aborted bitweaver alpha release install. If anyon can help, let me know.

Use of undefined constant STORAGE_PKG_URL - assumed 'STORAGE_PKG_URL' in /usr/www/users/dikdik/mundaneastrology/wiki/galaxia/config.php on line 28

Warning: Cannot modify header information - headers already sent by (output started at /usr/www/users/dikdik/mundaneastrology/wiki/galaxia/config.php:28) in /usr/www/users/dikdik/mundaneastrology/wiki/install/BitInstaller.php on line 36

Your Storage directory has proper permissions (777)?