I created this package. It was working it fine when I left it last week. This week I load it (actually loading packages is very cumbersome in Mathematica but that is another issue) and execute a function and it does not evalute complely. I have no idea why.
So the m file is attached and I try to execute zmstrip[0.008,0.015, 0.00274, 4.2] and I get
Your definition of zmstrip is after the execution of your End[] function. Hence it is being defined outside of the scope of the `Private context. Since zmstrip depends on zmswide, it does not see zmswide inside of the `Private context and the zmswide that is is trying to call is not defined, so it returns unevaluated. To solve the problem, move your End[] function to just before your EndPackage[] function.