The Logger Pro OS X install fails with a message that "There were errors..."

The Logger Pro Mac installer or updater can fail if the existing installation is unusual in certain ways, such as having been installed by root or a superuser. This can also happen if the hard drive was imaged incorrectly.

To successfully install Logger Pro, you must remove Logger Pro manually.

Try deleting the Logger Pro 3 folder in the Applications folder. Then try installing Logger Pro again.