If you try to start RoomSketcher Home Designer, and it doesn’t start, or your screen appears completely blank, it is usually one of two issues:
1. You need to make sure you have the latest version of Adobe Flash Player. To download and install the latest version, visit: http://get.adobe.com/flashplayer/
2. You need to make sure that you have enabled Flash for the RoomSketcher websites. For instructions on how to do this, check the "Enable Flash Player in your browser"-section of the article https://helpx.adobe.com/flash-player.html
If it still doesn't work, please try a different browser to see if that helps.
Note: If you are using Chrome, another problem could be that Chrome doesn't find the Internal Flash Player. To fix this, check this article: Chrome doesn't find Internal Flash Player