You needed to reinstall the iGrafx platform application server on a different machine or changed the path name or location of the web application server.
If you still have the basedirectory i.e. igrafxdata:
If don't have a basedirectory or dbconfig.xml file backup
If you use a backup of your dbconfig.xml file, but know that your DB user name or password changed, you can replace the encrypted values in your dbconfig.xml file with clear text to start the application. If you require the text to be changed into an encrypted string you can do this through entering the same values in the Administration > Server Settings > Database Settings dialog once you regained access to your iGrafx Platform.