I see that in 1.7.4 the phpunit.bat and phpunit files are now using phpunit2 this project that died in 2006. Phpunit is still being actively maintained by Sebastian Bergmann at https://github.com/sebastianbergmann/phpunit. This was the version being used by Xampp in version 1.7.3
Just hopping it will be switched back in 1.7.5
Regards,
Ethan Brooks