Error 923 points to the fact that there is something wrong with the downloads and the storage itself. In order to bypass the error and obtain the full functionality of the phone you should disconnect from the Internet and go to Settings > Applications > Running services and stop all the running processes related to Google and then restart your phone.
Another solution is to go to Market Application (Google Play Store) > My apps > Clear cache and reboot your phone then try to download again the required application.
Please note that when you stop the running processes they can be started again and you will need to reboot your phone.