Program update won't open (4.009)

I upgraded from 4.08 to 4.009 and the program won’t open. I’ve since downgraded the program so it will run again. Just wanted to let someone know that there might be a problem with the latest update.

OS: Mac El Captain 10.11.3
processor: 2.5 GHz Intel Core i5
memory: 4 GB 1600 MHz DDR3
Intel HD Graphics 4000 1536 MB: graphics