Also no prompt to user to setup image type and it goes of starting a build
This is because the default value for image output type contains multiple values. The GUI should be adjusted to handle multiple values being set.
GUI has been adjusted to handle multiple values for image output type with: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=9adf01d7be1c2fedfb71975619af60e8af2fe3f2
The symptom with the latest change is if I deselected all image types, the bake button is still enabled, thought we should add a checking in preference.
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=5c34022a11fb4f30101d2336cd03c7ea1270ac52
Verfied against latest master and there'll be warning message prompt to user