No i only have 1 store. I did notice what you pointed out and originally i thought it had something to do with that too. But, i believe something got crossed up when i installed 2 of your themes using the uploader.
Anyway, my fix was to drop the two helloslide tables in the DB. Then open the core_resources table, and look for the record that said helloslide. I then deleted the record.
That caused magento to reinstall the extension. Works fine now... :D