Another interesting happening from the awesome world of SharePoint errors and (i dare say) bugs is this weird error you can sometimes get when you try to open a page in the SharePoint Designer, particularly a WebPart page, even the Default.aspx. Starting from the beginning, I should remind you how SharePoint web part pages work. The fact of the matter is that while you can edit them and their code in SharePoint Designer, adding/closing/deleting web parts from within the browser interface also modifies the page’s code. Continue reading…