Are you sure when using "select window" that you don't have the 'current file only' option checked ?
I have the box unchecked and I'm using the window name as it appears in the window dropdown menu
Something is odd here.
Select window, with the current file only check box cleared works for me on both filemaker 10 and 11. Open file also opens the file I want and doesn't open it in a second window if it is already open...
Thankyou both for your help.
The something thst was odd was me, the error was in the window title