I wouldn't make any assumptions about any applications on the 4.6 OS unless the developer of that app has explicitly stated it is compatible. Otherwise, I wouldn't be surprised to see erratic, buggy behavior.
I would start clean and load apps one at a time, verifying that each survives a quick smoke test before moving on to the next one.
"If tyranny and oppression come to this land, it will be in the guise of fighting a foreign enemy. No Nation could preserve it's freedom in the midst of continual warfare." -- James Madison.