I use the -assemblies startup option to specify the directory where the assemblies.xml file is. I use a directory named assemblies at the top of my project. In OE Architect, Project Properties -> OpenEdge -> Startup parameters:

-assemblies assemblies

I put my assemblies (*.dll) into that assemblies directory, and my assemblies.xml file looks like the sample below. I blank out the version number so that I don't have to update it with each new release of Proparse.

<?xml version="1.0" encoding="UTF-8"?>
<assembly name="proparse.net, Culture=neutral, PublicKeyToken=cda1b098b1034b24"/>

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