Thank you for your response, I could never figure out something like that on my own. Worked perfectly.
Just took me about 3 hours to figure out how to display your plugin’s widget only when viewing the attachment page. This is the best I could come up with, creating new widget areas and:
<?php if (is_attachment() ) : ?>
<?php if (!function_exists('dynamic_sidebar') || !dynamic_sidebar('more-images') ); ?>
<?php else : ?>
<?php if (!function_exists('dynamic_sidebar') || !dynamic_sidebar('not-attachment') ); ?>
<?php endif; ?>
I don’t need it (anymore), but perhaps it’s a feature you might want to consider for your plugin.
Again, thanks for your help.