So after InDesign CC x64 (x32 version seemed fine?) giving me constant update failed errors and about four different error codes each different way I tried to fix it, I decided to find out why, like many I have been getting this in my Install log.
FATAL: Payload 'Adobe InDesign CC x64 Application Language Files_9.2.1.101_AdobeInDesign9AppLang64-en_US 8.0.0.15 {35937D37-6FF2-1014-BDC2-9CD1656E73E4}' information not found in Media_db.
Reinstalling via Control Panel or the CC Cleaner tool did nothing to remedy the situation and the same error kept occurring, even though CC is meant to download the language files (apparently)
However, what I thought was odd was the fact that it references 9.2.1 not 9.2.2. It seems Adobe CC installs InDesign CC 9.2.1 from a fresh install but then fails on the 9.2.2 patch, but it seems 9.2.1 itself is either corrupted or something doesn't go right with the language packs as the error above shows.
SOLUTION: Manually install both the 9.2.1 and 9.2.2 patches.
Get them from here: http://prodesigntools.com/adobe-cc-updates-direct-links-windows.html
Both will be named setup.zip, so rename them to something like setup_9.2.1 and setup_9.2.2 and extract both zip archives.
Install the 9.2.1 patch followed by the 9.2.2 patch, reboot and Creative Cloud should stop whining. It worked for me on Windows 8.1, open up InDesign > Help > About InDesign and check the version, it should be 9.2.2.
Image may be NSFW.
Clik here to view.
PROFIT.
Hope this works for others. Hopefully Adobe fix this in a CC app update, as this had me going in circles for a while.