Microsoft SQL Server 2014 has added 2 new data types: geometry and geography. gINT does not yet support these datatypes. If you have added columns to your gINT database of these types you will have to remove them to solve the above problems.
Please note: upgrading gINT from 8.30.03.135 to 8.30.04.206 will allow you to move past the first problem but you will not be able to upsize.