Hi eemanno,
Try this way:
1. Open project 'Provider.sln'(contain in the download package)
2. Open file 'CEHtmlEditorProvider.vb'
3. Find section '#Region " Provider "'
4. Add the code below into the section above
cntlCE.EnableStripIframeTags = False
5. Compile the project
6. Put the new 'DotNetNuke.CEHtmlEditorProvider.dll' into the bin folder of you site, and try again
You can use my file below(need version 6.4)
Regards,
ken