locked image: Macro

[Martin du Saire]

Hi,

I have an macro for manually counting blobs that uses setTool(7) to
mark and count the blobs in an image, and isKeyDown("space") to tell
the macro to open the next image in the directory.  I am getting the
"image is locked" error, but the mailing list references all refer to
Plugins, and Plugins calling other Plugins.  Has anyone had this
problem with a macro? Could the problem be caused by the user
(multiple keystrokes etc.)?  [WinXP, ImageJ 1.37j (300MB), Java 1.5.0]

Thanks.

Martin