Validate errors: dependency cycles amongst the xpath expressions

Please share what you identified the problem to be, and how you fixed it, so that perhaps others landing here in the future can determine if they hit the same problem.

If there is now something else wrong in your form, please start a new thread. BTW, a common mistake when making summation calculations - eg your "adding up the totals" - is not handling potentially null/empty operands; see here

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