Not enough information provided to have an understanding of the issue.. Can only suggest restoring your site to the state it was prior to installing IH2.. Nothing in the IH2 install files would stop your store from functioning.
Did you follow the install instructions in the readme?? Are you using the latest version of IH2 with the latest version of Zen Cart?? Also it's helpful to provide a link to the site or page where a specific problem can be seen..
Bookmarks