Load Data from heroku to lokal MySQL on Windows7

Load Data from heroku to lokal MySQL on Windows7

I'm trying to download data from heroku to local Win7 MySQL, using
standard syntax as described in Push and Pull Databases To and From
Heroku.
I've been doing it several times with sqlite locally but with MySQL Heroku
Toolbelt seems to have problems to connect to the database.
I get the following Error:
Failed to connect to database:
Sequel::AdapterNotFound -> LoadError: cannot load such file -- mysql
Below you can see my console log. I listed all dependencies as well. (May
be I miss one?)
What do I miss here?



Win7 console:
c:\Sites\app>heroku db:pull mysql://root:passwd@localhost/app-staging
Loaded Taps v0.3.24
Warning: Data in the database 'mysql://root:passwd@localhost/app-staging'
will be overwritten and will not be
recoverable.
! WARNING: Destructive Action
! This command will affect the app: app-staging
! To proceed, type "app-staging" or re-run this command with --confirm
app-staging
> app-staging
Failed to connect to database:
Sequel::AdapterNotFound -> LoadError: cannot load such file -- mysql
c:\Sites\app>bundle show mysql2
C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11-x86-mingw32
c:\Sites\app>mysql -V
mysql Ver 14.14 Distrib 5.6.11, for Win32 (x86)
c:\Sites\app>heroku --version
heroku/toolbelt/2.40.1 (i386-mingw32) ruby/1.9.3