I did, adapted tie viewer paths to the following
<br /> viewer.executeble=c:\Program Files (x86)\Adobe\Acrobat Reader DC\ReaderAcroRd32.exe<br /> dir.viewer=c:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader<br />

and I’m still getting an exception, the only difference now being the “unknown source” instead of a line number at the deepest level:
<br /> c:tempvakkk>java -Xmx1024m -jar libpd4ml.jar<br /> java.lang.NullPointerException<br /> at java.io.File.<init>(Unknown Source)<br /> at org.zefer.pd4ml.tools.PD4Browser.o00000(Unknown Source)<br /> at org.zefer.pd4ml.tools.PD4Browser.<init>(Unknown Source)<br /> at org.zefer.pd4ml.tools.PD4Browser.showGUI(Unknown Source)<br /> at org.zefer.pd4ml.tools.PD4Browser.main(Unknown Source)<br />

There is only “viewer.executeble” though, no “rtf”.