I am using Blocs 3 for current projects but have a couple older jobs that were done with Blocs 2. Can anybody confirm whether or not Blocs 2 works with Catalina? I understand Catalina demands that apps have been notorised by the developer @Norm
I have only one older project that uses Blocs 2, but it opens correctly and all seems to be OK.
That is good to hear. In the short term I shall be sticking with Mojave, but likely to buy a Mac Mini in the next few months, so I need to look at all the potential compatibility issues.