iTunes and the extremely disturbing problem that prevents the opening of the App Store

   Since I installed iTunes 10.5.2, I encounter the above error every time I open iTunes. Basically, I access iTunes from the dock, I get that error and the iTunes Store doesn't load, but if I search, the application is displayed and I can use the stores without problems. I thought I was the only one facing this problem, but unfortunately it seems that others have it too. So far, I have not been able to solve the problem by logging in/out or deauthorization, nor by deleting and reinstalling the application on the Mac. Basically, iTunes displays this message:

Your request could not be completed. The item you've requested is not currently available in the Romania Store.

   I don't know what exactly is causing this problem, I haven't tried too hard to solve it, but I will give it the necessary attention today because it is slowly starting to become annoying. Have you met her? How did you solve it?