When I click on sign in either when it prompts in the store or from the store menu nothing happens... No windows, no error messages... Nothing!!
Might be a third party software issue > Mac App Store: Sign in sheet does not appear, or does not accept typed text
Disable anti virus software. App such as Little Snitch and Net Nanny can prevent access to the App Store.
As for the MBox pro 2, check the manufacture website for v10.8 Mountain Lion compatible drivers.
Just so you are aware, Apple is not responsible for updating third party software such as drivers. That is the responsiblity of the manufacturer.
Yeah! Go Carolyn! Your answer suggested to me disabling rules for Hands Off (similar to Little Snitch). I would not call this anti virus software, since it focuses on notifying inbound and outbound network connections. But that is quibbling... the point is that listing the possible apps led me to the correct solution. Thank you for your help. Otavio
My iphone tells me that I have nine apps to update, but when I click the app store, it reads "cannot connect". Oddly enough, it will let me search,, etc., and even buy and download new apps!
Signed out, back in, etc.
Hard reset too. No change.
No such problem on ipad. Another friend having exact same issue, except with ipad, not iphone.
Methinks apple has a problem?