A few days ago, my YouTube app was updating for hours. it and several others apps needed updating and it started coming up as "insufficient storage space". I used clean master to clean out my caches. I've tried uninstalling apps. I have cleaned out the cache and data for google play. I uninstalled one of the apps and tried to reinstall, but I got the same error. I have been able to install other apps, but some apps won't install. It seems if it is an app run by google or Sony I definitely can't update or install it. I have 10 gigabytes on my internal storage and an SD card with another 40 gigs. Also I have 1.3 gigs free in my RAM. My tablet is a Sony Xperia Z2 and is running Android version 4.4.4. IT's starting to be real inconvenient, and now my google play services can't update. Can anybody help me?