When I delete the whole subcribe action, the problem never happened any more in IE.
It seems the only publish never cause error.
I thought it was caused by the updates itself App Session as Demo Stage 9 – Refresh: Publish-Subscribe Improvements in http://www.tersus.com/#Id=6421 .
So I add the same App Session Id and ignore it own updates:
Publish Ignore Own Updates.tersus
In fact in my application logic the application should update its own. I have encountered many similar "...status=12130,message=Unknown" or "The application is busy (stuck)" error in IE8.
For best results, use the Firefox browser..