Hi,
When an image is being used by a dynamic process, it is "busy" and little can be done with it. Usually a dialog appears to inform the user about this. But when trying to perform an operation on the image from a script, the error appears on the processing console with some surrounding HTML markup:
*** Error [000]: /home/hue/ll/lang/js/foo.js, line 97: <p style="white-space:pre;">image1</p><p style="white-space:pre;">The view is being used by an active dynamic interface.</p>
The message would be more user friendly if were presented in a dialog, or plain text in the console:
*** Error [000]: /home/hue/ll/lang/js/foo.js, line 97: image1: The view is being used by an active dynamic interface.