Hi Erel,
I've thought about the blank screen before, and have loaded an activity (before attempting to connect, and after the black screen). This is the symptom - it shows my activity for a split second before turning black. I tried to reload some Activity layout, but it still shows blank.
I tried to use my device for B4A Designer too, but the symptom remains the same.
Over to Agraham,
Prior to v1.15, I had no problem loading the Activity layout to Designer, either through Emulator or device. The no. of times it gets disconnected or fail is low, at most, around 5% for me. That is to say, in most cases, it works well for me.
But from v1.15 onwards, all these have changed. I'm hoping that it's an isolated case, but reading some of the comments here, I wondered why some of you'd encountered worst scenario than me, even prior to v1.15.
I'll try to uninstall the SDK and see whether it works for me. If it does, at least I can say that it could be due to data corruption on my sde.
Sidenote to Erel,..
How about a dedicated Designer, independent of Java. As the IDE is .NET, how about a .Net Designer. Currently, the speed of loading the layout and adjusting the controls/views are subjected to the PC processor speed and memory.
Rgds