Thanks; I'd misunderstood what I needed to specify as default viewer, and not noticed that I needed to specify the MIME type.
Next problem – jh2.0 installed yesterday, java 1.7.0_25 up and running … but an error message when I try to open the JavaHelp I've made from a ditamap. Am I using the right java command? or have I missed something else? N C:\Users\a548040\ditaXPS>java -version java version "1.7.0_25" Java(TM) SE Runtime Environment (build 1.7.0_25-b17) Java HotSpot(TM) Client VM (build 23.25-b01, mixed mode, sharing) C:\Users\a548040\ditaXPS>java -jar fullmapWH.jar no main manifest attribute, in fullmapWH.jar
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