I've set up an override CSS file and it's sitting in a Site Asset library.
When I view the file via SharePoint, it opens in my system default CSS editor - being my text editor of choice. This app is set as the default handler for the CSS extension in my Windows profile.
However, when I've checked-out the file then try to open it, it opens in SharePoint Designer 2010. Which is strange because the link clicked is exactly the same whether the file is checked out or not...
I've also fiddled with some options in SharePoint Designer 2010 to try and turn off this 'feature' but with out any luck.
How can I stop this behaviour and have CSS files handled only by the app I wanted?