"Document Format is Read Only" in 10.6

[wplate]

I opened a script that was saved as an application in Script Editor in Snow Leopard and it warns:

Document Format is Read Only
This script application is in a format that is no longer supported. You will not be able to save your changes, but you will be able to Save As a new script application. Do you want to edit this file anyway?
[Cancel][Allow Editing]

If I create a new script application in Snow Leopard will users of 10.5 and 10.4 be able to run it?

[Bruce_Phillips]

From the Release Notes:

Script File Formats
AppleScript Editor no longer supports saving applications in the old single-file format. All scripts saved as an “Application” will be saved as an application bundle with three supported architectures: ppc, i386, and x86_64. Such applications can run on Mac OS X v10.3 and later. Old single-file applications opened in AppleScript Editor will be treated as read-only files: you must use Save As to save them, and they will be saved in the new format.

“Application” replaces “Application Bundle” from previous versions. (“Application” from previous versions is the single-file format that is no longer supported.)

[wplate]

Will the new Applications run in older versions of the OS?

[Bruce_Phillips]

Read it again.

[wplate]

Sorry, I thought the text in the box was a quoting of my question so I didn’t read it. My bad.