Error in chroma key project.

[ghost]

I reffered this code in marvin chromakey project. but, I have some errors.

I already added the following three plugins in my project folder.

org.marvinproject.image.subtract.jar org.marvinproject.image.combine.combineByMask.jar org.marvinproject.image.transform.scale.jar

But,the output comes like this

run: java.io.FileNotFoundException: .\marvin\plugins\image\res\org.marvinproject.image.subtract.jar (The system cannot find the path specified) at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.(ZipFile.java:225) at java.util.zip.ZipFile.(ZipFile.java:155) at java.util.jar.JarFile.(JarFile.java:166) at java.util.jar.JarFile.(JarFile.java:103) at marvin.util.MarvinJarLoader.(MarvinJarLoader.java:39) at marvin.util.MarvinPluginLoader.loadPlugin(MarvinPluginLoader.java:54) at marvin.util.MarvinPluginLoader.loadImagePlugin(MarvinPluginLoader.java:37) at c.ChromaKey.(ChromaKey.java:72) at c.ChromaKey.main(ChromaKey.java:164) Exception in thread "main" java.lang.NullPointerException at marvin.util.MarvinJarLoader.getClass(MarvinJarLoader.java:69) at marvin.util.MarvinJarLoader.getObject(MarvinJarLoader.java:51) at marvin.util.MarvinPluginLoader.loadPlugin(MarvinPluginLoader.java:55) at marvin.util.MarvinPluginLoader.loadImagePlugin(MarvinPluginLoader.java:37) at c.ChromaKey.(ChromaKey.java:72) at c.ChromaKey.main(ChromaKey.java:164)