Thank you for your reply. I got the caption to work (the editor treats it as text, which is fine).
And yes, it was the WordPress treatment of images that inspired me to offload them to an image site. I use both Picasa and Flickr. There are some good plugins to help upload and access them.
Images and text do not belong together in the same database; the processing is much different. Your editor solves the majority of WordPress issues. In fact, as an old programmer, I can say that the WordPress core could be much more adept and faster at the same time. I believe they have strategy issues which dearly affects usability.
Thank you again for the wonderful plugin. I can tell from your work that your team is thinking:)
FYI, I found this site searching for a solution to TinyMCE regarding toolbar button usage.
When I clicked on tables or image buttons, a blank window appeared and my browser attempted to download the htm plugin file. It appears there are any number of causes for this issue, all poorly documented, and it extended to the TinyMCE advanced plug-in also.
Rather than track down all the issues, I found the solution in your wonderful WYSIWYG editor, with the exception of the caption issue listed above.
Hopefully this comment will direct more WordPress users to your site who experience the same issue as me.