Well i had my information dis appear too, and was quite glad when you said where i had a back up

the updater will run now and say no updates needed...

except im still having trouble loading important regions such as
East Hydlaa
Oja road 1 [i havent checked road 2]
Gugrontid

As Caarrie said:
according to recent changes [done before the updater was released i think] it should use updaterinfo.xml.bak if updaterinfo.xml is missing, but if the updater was not updated [i am not sure] then this fix is not released just yet. [end of quote]
the problem is not that the itself was missing, rather the information inside this file, any ways, i fixed the lack of info, ran the updater, 'no updates needed' and those regions wont load