Java SDK not found (DITA XML users)
In order to process DITA source documents, ePublisher utilizes the DITA Open Toolkit. The OT requires the Java Development Kit for proper functionality, but ePublisher does not install this software itself. If you try to generate output with the XML adapter, you may get an error like this:
[WARN] Unable to resolve environment setting 'JDKHome'.
In that case, visit Sun's website to download the SDK. The official DITA OT documentation lists the j2se version 1.4 as the supported SDK, and that is available for download here: http://java.sun.com/j2se/1.4.2/download.html
Sun has also released more recent versions of the SDK, which should also function correctly with ePublisher 9.3. You can check for the latest release here: http://java.sun.com/javaee/downloads/index.jsp
ePublisher should automatically resolve the most recent version installed on your system, and it will use that.
So, close all ePublisher components. Download and install the Java SDK. Then, reopen your project and regenerate output. If the problem has not been resolved, please submit a support case.