Robert, Thanks again for the reply - since posting, I have worked out how to specific a config file, and also found the existing config file for the viewer. I've basically copied that file to my desktop and tried to use it as a custom config file just to see if that works. When I point it to index.html?config=mycustomconfig.xml I get an error saying: A problem occurred while parsing the configuration file mycustomconfig.xml? Error #1085 I've basically just copied the exact config file that works - am I missings something obvious? Cheers
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