As I\'m new to ruby on rails,need help of pro\'s,in first app installation,as I\'m using Mysql DB on my system,i installed its gem also,but Im getting this error when I doing Bu
mysql2 0.2.13 was released without binaries for Windows. Because of that, compilation is required.
Since you're using RailsInstaller, you already have pretty much all the components to solve this, but I will recommend you read a blog article I posted about compiling mysql/mysql2 gem on Windows:
http://blog.mmediasys.com/2011/07/07/installing-mysql-on-windows-7-x64-and-using-ruby-with-it/
Then, you can bundle install
and since the gem was already installed, it should be working afterwards.