Hi All
Thanks to arij, found the problem:
If you copy the text of a caption within captivate and paste it into the title name of the Slide, ther may be hidden Signs.
Erease all Slide names if you cannot spot the error.
Adobe shold at least show the source of these errors if it fails compiling.
I have to say that Adobe did not a good Job on captivate. It does not at all meet the quality of other adobe tools.