I have had this add-in for some time. It periodically fails in at least 2 ways:

1. It has trouble with many equations.
2. It occasionally scrambles text. In this case, the PDF looks OK on the screen, but the text is scrambled when printed. I have tested it on multiple printers.

How can I tell what version I have and/or whether i have the latest version?

I also have Acrobat 9 Pro. It handles the equations and text, but it screws up my Word settings.

Is there a better third party tool I should get instead?

If you have Office 2007 updated to SP3, you have the most recent version which includes the PDF functionality, which at best is rudimentary compared with Acrobat. In what way does Acrobat 'screw up your Word settings'? There is no better tool than Acrobat (apart from the latest version of Acrobat, I guess, though version 9 was just as capable of producing PDF documents).

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Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com

After running the Acrobat add-in, several Word settings are changed. It took me a while to figure out how these settings were getting changed. I finally figured out it was the Acrobat add-in. I ended up writing a macro (MyStdSettings) to restore the settings: It sets Show Picture Place Holders (Off), Field Shading (Always), Show Field Codes (Off), Show Text Boundaries (Off), Track Revisions (Off), and Spell & Grammar Checking (On). I don't thing the add-in changed all of those, but it absolutely changed at least a couple of them. It should not change any settings. This is typical of Adobe arrogance.

Also, the add-in will not run without first saving the document. This is more Adobe arrogance thinking they know what I need better than I do. I'll save the document when I want to save it. I have no problem with them warning me, but to force a save is arrogant.

Not in my opinion. Acrobat is one of the worst, most poorly designed products ever put out by a major corporation. Even Microsoft was not able to do worse. I wish Woody Leonhard would write a book about the gotchas in Acrobat like he did for Word. It would be twice the size.