diff --git a/source/net/filebot/HistorySpooler.java b/source/net/filebot/HistorySpooler.java
index 2da960cb..32252fa6 100644
--- a/source/net/filebot/HistorySpooler.java
+++ b/source/net/filebot/HistorySpooler.java
@@ -97,7 +97,12 @@ public final class HistorySpooler {
 		List<Element> sequence = new ArrayList<Element>();
 
 		for (Entry<File, File> element : elements) {
-			sequence.add(new Element(element.getKey().getName(), element.getValue().getPath(), element.getKey().getParentFile()));
+			File k = element.getKey();
+			File v = element.getValue();
+
+			if (k != null && v != null) {
+				sequence.add(new Element(k.getName(), v.getPath(), k.getParentFile()));
+			}
 		}
 
 		if (sequence.size() > 0) {
diff --git a/source/net/filebot/cli/ArgumentBean.java b/source/net/filebot/cli/ArgumentBean.java
index 6a50f702..8e5077bc 100644
--- a/source/net/filebot/cli/ArgumentBean.java
+++ b/source/net/filebot/cli/ArgumentBean.java
@@ -28,6 +28,7 @@ import org.kohsuke.args4j.spi.ExplicitBooleanOptionHandler;
 
 import net.filebot.ApplicationFolder;
 import net.filebot.Language;
+import net.filebot.RenameAction;
 import net.filebot.StandardRenameAction;
 import net.filebot.WebServices;
 import net.filebot.format.ExpressionFileFilter;
@@ -201,7 +202,7 @@ public class ArgumentBean {
 		return files;
 	}
 
-	public StandardRenameAction getRenameAction() {
+	public RenameAction getRenameAction() {
 		return StandardRenameAction.forName(action);
 	}
 
diff --git a/source/net/filebot/cli/GroovyRenameAction.java b/source/net/filebot/cli/GroovyRenameAction.java
new file mode 100644
index 00000000..63229755
--- /dev/null
+++ b/source/net/filebot/cli/GroovyRenameAction.java
@@ -0,0 +1,34 @@
+package net.filebot.cli;
+
+import java.io.File;
+
+import groovy.lang.Closure;
+import net.filebot.RenameAction;
+
+public class GroovyRenameAction implements RenameAction {
+
+	private final Closure<?> closure;
+
+	public GroovyRenameAction(Closure<?> closure) {
+		this.closure = closure;
+	}
+
+	@Override
+	public File rename(File from, File to) throws Exception {
+		Object value = closure.call(from, to);
+
+		// must return File object, so we try the result of the closure, but if it's not a File we just return the original destination parameter
+		return value instanceof File ? (File) value : null;
+	}
+
+	@Override
+	public boolean canRevert() {
+		return false;
+	}
+
+	@Override
+	public String toString() {
+		return "CLOSURE";
+	}
+
+}
diff --git a/source/net/filebot/cli/ProcessRenameAction.java b/source/net/filebot/cli/ProcessRenameAction.java
new file mode 100644
index 00000000..b13c3708
--- /dev/null
+++ b/source/net/filebot/cli/ProcessRenameAction.java
@@ -0,0 +1,38 @@
+package net.filebot.cli;
+
+import static net.filebot.Logging.*;
+
+import java.io.File;
+
+import net.filebot.RenameAction;
+
+public class ProcessRenameAction implements RenameAction {
+
+	private final String executable;
+
+	public ProcessRenameAction(String executable) {
+		this.executable = executable;
+	}
+
+	@Override
+	public File rename(File from, File to) throws Exception {
+		Process process = new ProcessBuilder(executable, from.getPath(), to.getPath()).inheritIO().start();
+
+		if (process.waitFor() != 0) {
+			debug.severe(format("[%s] failed with exit code %d", executable, process.exitValue()));
+		}
+
+		return null;
+	}
+
+	@Override
+	public boolean canRevert() {
+		return false;
+	}
+
+	@Override
+	public String toString() {
+		return executable;
+	}
+
+}
diff --git a/source/net/filebot/cli/ScriptShellBaseClass.java b/source/net/filebot/cli/ScriptShellBaseClass.java
index 1ec61fcd..aab9f15f 100644
--- a/source/net/filebot/cli/ScriptShellBaseClass.java
+++ b/source/net/filebot/cli/ScriptShellBaseClass.java
@@ -513,29 +513,8 @@ public abstract class ScriptShellBaseClass extends Script {
 			return StandardRenameAction.forName(obj.toString());
 		}
 
-		if (obj instanceof Closure<?>) {
-			return new RenameAction() {
-
-				private final Closure<?> closure = (Closure<?>) obj;
-
-				@Override
-				public File rename(File from, File to) throws Exception {
-					Object value = closure.call(from, to);
-
-					// must return File object, so we try the result of the closure, but if it's not a File we just return the original destination parameter
-					return new File(value.toString());
-				}
-
-				@Override
-				public boolean canRevert() {
-					return false;
-				}
-
-				@Override
-				public String toString() {
-					return "CLOSURE";
-				}
-			};
+		if (obj instanceof Closure) {
+			return new GroovyRenameAction((Closure) obj);
 		}
 
 		// object probably can't be casted