Hi Eliot, I would recommend a clean installation including the DIA framework side by side with the existing one (in a different folder) and see if that makes a difference. If you still want to investigate that installation: how did they get the DITA support into that installation if the framework was not installed? Please check that the framework is not disabled in Options->Preferences -- Document Type Association, check the Enabled checkbox (the first column) for the DITA framework. You can also show the Information view from Window->Show View->Information and see what happens when the file is validated, what schemas are used. From Options->Preferences -- XML / XML Catalog -- Verbosity you can set how much information is displayed from the XML Catalog resolution - that may provide additional details on what is going on. I hope these ideas help! Best Regards, George -- George Cristian Bina <oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger http://www.oxygenxml.com On 5/7/13 7:09 PM, Eliot Kimber wrote:

I'm helping a colleague set up an Oxygen environment. For reasons I can't determine, it is failing to resolve any DITA-related DTDs.

I did find that the master frameworks catalog did not have a reference to the frameworks/dita/catalog.xml. I added that reference, verified that it was correct and that it eventually got me to the catalog-dita.xml catalog, but even after restarting Oxygen, it is still unable to validate any DITA documents.

I compared the various catalog-related settings to my own environment and couldn't see any obvious differences.

Any idea what I might have overlooked? It appears that when Oxygen was initially installed DITA was not selected as a framework, but all the DITA-related settings appear to otherwise be in place.

Other than the entry in the master catalog, is there some other setting I might have overlooked?

Thanks,

Eliot