OK, I hope that I can help with that.
I don't know what you mean by "show runtime preview in div". The editor is designed to be "attached" to certain fields in a form, as instructed in the web2py slices page.
The editor works fine as the plugin instructs, when used in the browsers that I have used.
What browser are you using it in, what version of web2py, and how have you configured it?
How did you install it?