Undefined Variable and not converging to solution

In the attached problem, Mathcad gives me an error saying that epsiloncamx is undefined, when it is clearly defined above.

Later, in the solve block, it says the constraint does not converge to a so

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The above is cut off, the last sentence should continue to read:

Later, in the solve block, it says the constraint does not converge to a solution, but all the variables are defined above it.

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