I just did a test. If I put this plugin in header template. It works.
vB_Template:

reRegister('header',array('include_d efaultpage' => $include_defaultpage));
--------------- Added [DATE]1309230334[/DATE] at [TIME]1309230334[/TIME] ---------------
it works now.
I changed /bbs/CCED/float/default.html to CCED/float/default.html
You are right. It did not find the file.
Thanks.