The major version of the project is not compatible with the
product version.
The project version is not compatible with the product
version. The might occur when a project that was created using an
older version of Test UI is
used with new version resulting in the project being incompatible
with the version of the product. The user is given an option to upgrade
the project to make the project compatible with the product version.
Check that the major version of the project in compatible
with the product version. Right-click the project and select Properties.
Select Functional Test Project to see the project version.