what he is saying is that (based on your initial post) you've installed something which probably modified some of the same files used by Edit Orders. You have inadvertently removed code Edit Orders needs. That is why you get the odd URLs. The odd URL means that required code in another file is missing.
Please try re-doing your Edit Orders install. Please be sure that when installing other add-ons which modify the SAME files as other add-ons you've installed that you use a file comparison program as we suggest in the readme file for Edit Orders..
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