I am not sure what is going on, but my app only connects to the debug session about once for every 3 times I try to debug. This is only true in the new debugger. When I have big compiles it is very frustrating to have to wait, but when it doesn't connect on the first try, it does a full recompile and then attempts to connect. It usually works by the 3rd time. I should mention that I make sure I only have one session connected in the B4A-Bridge.