Kindle plugin crashes and bugs

Question

Hello,
I've been using Indesign since 2001 for publishing Bibles (large Books of 700+ pages).
Recently, I started using the Kindle plugin for CS4. The first Kindle Book was successful, but I have some bugs to report.
Just about every time I start the export to Kindle process, the export crashes and I get a popup saying "Object invalid" or "not an Object". I restart the export, and it runs. Go figure.
Sometimes, the export will halt part way through the process, and popup the same message(s) about an invalid object.
If this doesn't happen, the resulting .mobi file is good and usable. Although I have found that any indented text (such as a Table of Contents [just text not hyperlinked or anything]) with 3 levels of indentation will not line up correctly in the outputted file; and anything I do to correct it doesn't seem to work; and the result will look different in different Kindle devices, according to the Kindle emulator tool.
If these problems are ignored and an output .mobi file can be generated, the Kindle file is pretty good. It is much better quality than a comparable .mobi file generated starting with Word documents, then using the Amazon emulator tool to convert it to .mobi. So kudos to Adobe guys, your product is performing better than the alternative, but there are still warts.
The 2nd problem I am having currently, is that I have another Bible version that I have prepared for exporting to Kindle format, using identical everything  to the previous Bible version. There are 40 individual documents tied together by a "Book", relatively small sizes. Every time I have tried to export this Book to Kindle, it crashes, and I have no idea why. I tried "save as" for every document, so each one would be a clean file.
I just did another export, and I got the following error popup that you can see here. Please help if you can. Thanks

Answer 1

I think I figured out what was wrong.
I was using a Book with 40 different documents tied together into a single Book.
I created a new document and "repoured" the content from the single documents into the new single document with a lot more pages. After adding several of the single doc contents, I did a test run to see if the old bugs would should up, and not a single one did.
I still need to repour all of the content into the new single document and retest, but I've got a feeling that this was the problem. It appears that the Kindle plugin works fine with single docs, but not with Books and a bunch or even a few single docs tied together. That creates crashes, and it always results in that error that you see in the photo above.
That should help you all to run down the source of the problem.
I liked the Book w/ single docs, because I needed to create a TOC with each single doc. If they're all together when creating the TOC, unless you do a lot of extra work making special styles for each TOC, it all globs together and that's not what was desired.
So anyway, I hope this helps. I'll post again, once I get it all combined tomorrow and rerun the export, and let you know the results.