After 3.0 upgrade, doesnt boot on Mac OS 10.8.5

After 3.0 upgrade, doesnt boot on.Mac OS 10.8.5.

So far the marjority of reviewers are saying the same thing. Luckily I have an older version to revert to… but irritating and now Ive lost confidence in this app.

Steve NYC about Blackmagic Disk Speed Test, v3.0