NOTE: DocuShare should be on a dedicated DocuShare server to have proper performance, it should not be sharing a server with other applications.
CenterWare Web (CWW) uses MSDE as its database and this will conflict with DocuShare if your DocuShare installation also uses MSDE.
Solution:
The only workaround is to install MSDE to a different instance so that DocuShare and CentreWare Web can co-exist on the same server. If you are not able to install MSDE to a different instance then you will not be able to have both CenterWare Web and DocuShare on the same server.
NOTE: Before installing MSDE to a different (named) instance make sure you back up your MSDE database, so that you can recover your information if needed.