Using this method always worked until we upgraded from 6.5.4 to R8. Has anyone else had this problem? Have you been able to resolve it? If so, what was your resolution?
Subject: Solved!!! Note Item Not Found when using method RenderToRTItem
I found the problem to be caused by a design element with an alias (doclink) which was the same as the name of the form (DocLink) being rendered to rich text. I removed the alias, and the errors went away.
Hope this saves someone else some time and frustration.
Subject: RenderToRTItem results in error “Note item not found”
Check this Technote