[Notjohn]

I've never run into this one before! I get a validation error on Epubcheck that says:

assertion failed: different playOrder values for navPoint/navTarget/pageTarget that refer to same target

The error is at line 21, position 45. Line 21 reads as follows:

<navPoint id="navPoint-2" playOrder="2">

And position 45 is the blank space following the closing angle bracket, so evidently there's something missing.

There is a similar error for each chapter of the book. What have I done to myself this time?

Thanks - NJ