The desktop version of colwiz Library keeps a cache of publication data on the harddisk for offline access to Library functions and faster sync with colwiz website. You can choose to rebuild this cache in order to remove any possible inconsistency with the website that might have formed. You will not lose any publications or files in this process.
Simply, click on the "Settings" button in the bottom right corner and open the "Advanced" tab. Click on the "Rebuild" button to rebuild the Library cache which should take a couple of a minutes in case of large number of publications.