Why can't I download anything from the Market after CSC change?

I changed the [CSC](http://ykkfive.blogspot.nl/2011/11/samsung-csc-code-reference.html) to my country and after that, I couldn't download anything from the Market. **It gives this error: "app name" could not be downloaded due to an error. (-101)** I tried updating to Market 3.4.4, cleared the cache, rebooted my phone. Nothing worked. I don't have wifi at home and I get online via free wifi at a local mall. Couldn't download any app for 2 days now (that I've tried after the CSC change) but I'm able to browse. Please help. Thank you.