PICMicros are back! What happened? Earlier versions of VBB had no license protection and were sold as a download with share-it. Wu Xia Pdf. Before too long these paid download version made their way to the internet download sites and sales of VBB collapsed. The choice was either to stop with VBB and throw away years of work or add some sort of licensing system. As a result parts of VBB have been moved to the cloud and require license keys to access. It 's not perfect, you need a full time internet connection for example, but it's better than the alternative of stopping with VBB altogether.