I cant update in app store get error plist parsing error

Apple’s having trouble with the iTunes Store servers right now. Keep checking http://www.apple.com/support/systemstatus/ and wait for them to resolve the issue.

(123941)

The problem seems to be occurring again. However, the Apps server for MacOS went down an hour or two ago giving a service unavailable 503 error. So I assume that it will be fixed later today.

I having this problem too, it seems the problem is not totally solve since March.