File Info Professional software launches when I try to install gridrepublic_6.8.43_macOSX_i686 on my MacPro. Can't install the gridrepublicsoftware

Mac Pro (Late 2013)

Processor 3.7 GHz Quad-Core Intel Xeon E5

Memory 128 GB 1066 MHz DDR3 ECC

Graphics AMD FirePro D300 2048 MB

Platform: x86_64-apple-darwin13.4.0 (64-bit)

Running under: OS X 10.11.4 (El Capitan)