Database diagram - Attempted to read or write protected memory

A possible cause is having VS 2012 installed, installing VS 2013 and later uninstalling VS 2013. It leaves the VS 2012 installation corrupted.

Delete: C:\Program Files (x86)\Common Files\microsoft shared\Visual Database Tools\dsref80.dll
and everything in C:\Program Files (x86)\Common Files\microsoft shared\MSDesigners8\, then run a repair for VS 2012

Thanks to stackoverflow 

Rom Directory

This application is designed to make it as easy as possible to find and download all the different roms out there.
All the files are downloaded directly from the developers host of choice.

Go to Rom Directory on Play Store