That's a strange one that we haven't seen. I've actually been testing this plugin for hours today as we're getting ready to release an update, and that's one issue I haven't run into.
I did experience problems when trying to embed more than one testimonial per page, which is expected, at this point, because the plugin will only accommodate one testimonial area per page (widget, template, or editor)
A few more ideas:
- Could you find a time that to quickly disable all plugins except the testimonial plugin and see if it makes a difference?
- If the above allows the plugin to work, re-enable your other plugins one-by-one until it breaks again and let us know which plugin had a conflict.
A few more questions:
- What is the exact shortcode you're using?
- Should work fine with 3.3.2, but is there a reason you haven't upgraded to 3.5 yet? It's awesome. :)