AWeb 3.5 (which was included in BB3) halts on my A600 with ACA630 (and also in my clone test environment under WinUAE).
If I test it under WinUAE (with same config as my A600) but with adding +FPU... AWeb 3.5 runs just fine without halting issues! I guess it requires an FPU to work (unless there is a way to disable that.
AWeb 3.4 works just fine in every setup of mine, so I'm sticking with it atm.