'More Options' breaks on sub folder installation

[camexapps]

Hi there,

Awesome module ;-)

Just noticed, with a SilverStripe installation on a sub folder. eg. http://foo.com/cms the 'More Option' feature under the edit options breaks/rewrites the URL to:

http://foo.com/admin/assets/EditForm/field/File/item/641/edit

Whereas, the output expected should be:

http://foo.com/cms/admin/assets/EditForm/field/File/item/641/edit

If this could be fixed, that would be greatly appreciated.

Cheers!