Slivisu would not start under windows

starting slivisu results in the exception below

java.nio.file.InvalidPathException: Illegal char <:> at index 2: /E:/slivisu/target/classes/
	at sun.nio.fs.WindowsPathParser.normalize(Unknown Source)
	at sun.nio.fs.WindowsPathParser.parse(Unknown Source)
	at sun.nio.fs.WindowsPathParser.parse(Unknown Source)
	at sun.nio.fs.WindowsPath.parse(Unknown Source)
	at sun.nio.fs.WindowsFileSystem.getPath(Unknown Source)
	at java.nio.file.Paths.get(Unknown Source)
	at de.potsdam.gfz.slivisu.Slivisu.detectWorkingDir(Slivisu.java:133)
	at de.potsdam.gfz.slivisu.Slivisu.<init>(Slivisu.java:67)
	at de.potsdam.gfz.slivisu.Slivisu.main(Slivisu.java:185)
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Couldn't find file: null
Exception in thread "main" java.lang.NullPointerException
	at de.potsdam.gfz.slivisu.Slivisu.initFolders(Slivisu.java:151)
	at de.potsdam.gfz.slivisu.Slivisu.<init>(Slivisu.java:78)
	at de.potsdam.gfz.slivisu.Slivisu.main(Slivisu.java:185)