I download latest BlogEngine.NET source code and opened it in Visual Studio built it successfully and then it was running as expected.
I noticed the ‘Blank/White Page’ issue when I deployed same running application on production machine.
After westing some time I found quick solution, basically I had uploaded BlogEngine files on production machine where ‘IIS_IUSRS’ was not able to access web.config file.
Here is the way to fix this issue: Just right click web.config and click properties, under security tab, add IIS_IUSRS.
Hope this helps.