Along with the issues of App Framework 3, V3400 is so unstable.
Open debug, refresh the designer, crash,
Click Emulator, refresh content, crash,
Change Code, select emulator, refresh content crash.
I have uninstalled and reinstalled but this has not made any difference.
I am having to restart XDK 30 (Yes 30) times a day which is crazy. I've made a commitment to using XDK, but sadly I'm loosing patience now as each revision seems to be a retrograde step in reliability and stability over functionality.
The Emulate tab is causing a lot of stability problems. Our next release will change that component to a completely different component that is much more stable and runs in a separate process. Until then, we recommend that you follow the workarounds provided in this post > https://software.intel.com/en-us/forums/intel-xdk/topic/624417 <