The license code is not compatible with the installed version of Microsoft Dynamics CRM

This potential CRM error should typically appear if you had a CRM database, uninstalled it and then tried to reinstall with a different license type. But it can also appear if you used a different license code during the reinstall. You can get confused if you have access to multiple installations and forgot the key you used for a particular instance. But no worries, you can find you key again in SQL -> MSCRM_CONFIG -> ConfigSettings -> LicenseKey. Use that key and it should solve your problem