While I appreciate the offer to validate your code, but I'm a little swamped at the moment with other projects.
I think the best place for you to start is with building a form with all the options and elements, a "kitchen sink" if you please. And run the generated source through the w3c validator. You'll need a complaint skin to test on, but I haven't found any pages on this site that are XHTML compliant. (Perhaps DataSprings should purchase a compliant skin from snowcovered to test with?). Go to http://validator.w3.org/, and paste the page source in the direct input tab. I always start at the top of the error list and revalidate after each correction. Sometimes correcting 1 issue will fix a dozen errors.
Here's another thread from a different user.
http://www.datasprings.com/Products...aspx#11982
Here's my stance, I can't use Dynamic Forms, or any module, that breaks validation for my site. It's a professional standard, pure and plain, that is widely adopted and followed in the industry. FormMaster does validate by default, and although the product hasn't had updates in over 2 years, it works and I don't have to spend time cleaning up other developers code.
I hope you can appreciate this position. Compliance is often requested by clients (we do it regardless if they request or not) and in our best interests as web developers.