I got a warning telling me I would lose my account cache data [i.e. - character info] if uninstalled, and to install the new game from GF would leave me with 5% HD space left which is dangerous if I were to do that and leave the o.ld on here. Any advice on how to proceed? Is there a file that has just my character info I could pull to dsktp then delete old before new install maybe?
The only cache that is stored locally in your PC, is the Appdata folder cache.
In there, are stored only the effects of skill animations of your characters and of the other players' characters. The specific cache's role is to not have visual lag when an extreme skill animation is performed by you or any other player.
Also, the cache may keep stored some UI settings, like chat position and chat letter size .
This cache was created back in 2013, when reaper appeared to Tera, and many ppl were complaning about reaper's skills animation, cause they were causing extreme visual lag every time.
To access the cache files and take a backup, click Start, type %appdata% and click the Local folder. In there you may see a folder named "TERA\LIVE". In this folder the cache is stored.
After uninstalling and re-installing, you type again %appdata% and you restore the folder "TERA\LIVE" you backed up previously.