To share charts on the forums, DO NOT attach a zip file, pdf, jpg, etc.
Only share charts in iReal pro format directly from your app.
Just post the chart following the instructions in the app.
There is a detailed tutorial inside the app in Settings/Tutorial/Sharing
or just touch the "?" In the circle at the top of any chart.
In OSX look under: Help/Tutorials and Help/Help & Support.
Also online at http://irealpro.com/support