diff --git a/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy b/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
index 24e09b72..b528c262 100644
--- a/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
+++ b/source/net/sourceforge/filebot/format/ExpressionFormat.lib.groovy
@@ -14,6 +14,8 @@ Object.metaClass.match = { Map cases -> def val = delegate; cases.findResult { s
 */
 File.metaClass.getAt = { Range range -> listPath(delegate).collect{ replacePathSeparators(getName(it)).trim() }.getAt(range).join(File.separator) }
 File.metaClass.getAt = { int index -> listPath(delegate).collect{ replacePathSeparators(getName(it)).trim() }.getAt(index) }
+File.metaClass.getRoot = { listPath(delegate)[0] }
+File.metaClass.listPath = { listPath(delegate) }
 
 
 /**
diff --git a/source/net/sourceforge/filebot/format/SecureCompiledScript.java b/source/net/sourceforge/filebot/format/SecureCompiledScript.java
index c1ae8ace..8ec1b17d 100644
--- a/source/net/sourceforge/filebot/format/SecureCompiledScript.java
+++ b/source/net/sourceforge/filebot/format/SecureCompiledScript.java
@@ -33,6 +33,7 @@ public class SecureCompiledScript extends CompiledScript {
 		permissions.add(new SocketPermission("*", "connect"));
 		permissions.add(new PropertyPermission("*", "read"));
 		permissions.add(new RuntimePermission("getenv.*"));
+		permissions.add(new RuntimePermission("getFileSystemAttributes"));
 		
 		// write permissions for temp and cache folders
 		permissions.add(new FilePermission(new File(System.getProperty("ehcache.disk.store.dir")).getAbsolutePath() + File.separator + "-", "write, delete"));