I have the 7" version of this tablet MID-7042 that runs ICS 4.0.3 and ran into the same problem. No google play. able to install via .APK but crashes when it is open. Same thing actually happens with flash player. Tried superoneclick for rooting and it hangs on step #7. Tried Sony's steps with closing it out and restarting many times but it doesn't ever seem to finish.
Has anyone had any luck on these coby devices with another root application?