JAR-Files're associated with "jPortable Launcher (64-bit)", so it can be started via windows explorer using Java located in "PortableApps\CommonFiles" ... and it does. But not with SP via mouse gesture. Another EXE-files start fine with SP. Same with jDownloader: EXE - yes, JAR - nope.
1. Another issue with same gravity. Can I use relative paths e.g. "..\..\..\name.exe" instead of that absolute paths. 2. MediathekView.jar c:\temp -M, so even for second path parameter I need to use absolute path. Again, how's the right syntax.