Hi, I want to convert XProc Pipelines in oXygen with a custom XML Calabash (https://github.com/transpect/calabash-frontend). Therefore, I followed Adrian's instructions which he made on this list some years ago: https://www.oxygenxml.com/pipermail/oxygen-user/2013-March/004558.html However, I ran into a couple of problems: (1) I can run a simple XProc pipeline, but when I want to use an XProc extension step in my pipeline, Calabash aborts and states that there is no class in my configuration for the extension step. However, I've added this to my engine.xml: <library name="extensions/transpect/unzip-extension/io/transpect/calabash/extensions/UnZip.class"/> And I have this in my calabash.config file. The paths are correct. <implementation type="letex:unzip tr-internal:unzip" class-name="io.transpect.calabash.extensions.UnZip"/> (2) I was not able to add a custom XML catalog to the configuration. I've tried to add this to the engine.xml, but it doesn't worked: <system-property name="Dxml.catalog.staticCatalog" value="1"/> <system-property name="Dxml.catalog.files" value="xmlcatalog/catalog.xml"/> Has anyone integrated it's own Calabash or has any suggestions? Kind regards, Martin -- Martin Kraetke Lead Content Engineer le-tex publishing services GmbH Weissenfelser Str. 84, 04229 Leipzig, Germany Phone +49 341 355356 143, Fax +49 341 355356 543 martin.kraetke@le-tex.de, http://www.le-tex.de Registergericht / Commercial Register: Amtsgericht Leipzig Registernummer / Registration Number: HRB 24930 Geschäftsführer: Gerrit Imsieke, Svea Jelonek, Thomas Schmidt