From around the world appear on social media messages that Mac OS X users complain about no longer functioning apps.
After filling in your information or reinstalling the conscious apps, the problem is solved. What 's behind the strange error messages is, is not entirely clear. Apple does not know anything about reported and developers have several explanations. Then would have problems with certificates or would have to do with the virtual cash register receipts that Apple uses to keep working for paid apps.
How annoying problem is, personal data do not appear to have been at risk.