diff --git a/source/net/sourceforge/filebot/format/AssociativeScriptObject.java b/source/net/sourceforge/filebot/format/AssociativeScriptObject.java
index 9aa9b8c7..7888d45c 100644
--- a/source/net/sourceforge/filebot/format/AssociativeScriptObject.java
+++ b/source/net/sourceforge/filebot/format/AssociativeScriptObject.java
@@ -9,7 +9,7 @@ import java.util.TreeMap;
 import org.mozilla.javascript.Scriptable;
 
 
-class AssociativeScriptObject implements Scriptable {
+public class AssociativeScriptObject implements Scriptable {
 	
 	/**
 	 * Map allowing look-up of values by a fault-tolerant key as specified by the defining key.
diff --git a/source/net/sourceforge/filebot/format/EpisodeFormatBindingBean.java b/source/net/sourceforge/filebot/format/EpisodeFormatBindingBean.java
index f39dea67..aa7c9bcc 100644
--- a/source/net/sourceforge/filebot/format/EpisodeFormatBindingBean.java
+++ b/source/net/sourceforge/filebot/format/EpisodeFormatBindingBean.java
@@ -125,9 +125,7 @@ public class EpisodeFormatBindingBean {
 
 	@Define("crc32")
 	public String getCRC32() throws IOException, InterruptedException {
-		// make sure media file is defined
-		checkMediaFile();
-		
+		// use inferred media file (e.g. actual movie file instead of subtitle file)
 		File inferredMediaFile = getInferredMediaFile();
 		
 		// try to get checksum from file name
@@ -201,6 +199,9 @@ public class EpisodeFormatBindingBean {
 
 	@Define("inferredFile")
 	public File getInferredMediaFile() {
+		// make sure media file is defined
+		checkMediaFile();
+		
 		if (SUBTITLE_FILES.accept(mediaFile)) {
 			// file is a subtitle
 			String name = FileUtilities.getName(mediaFile);
@@ -234,6 +235,7 @@ public class EpisodeFormatBindingBean {
 			
 			MediaInfo newMediaInfo = new MediaInfo();
 			
+			// use inferred media file (e.g. actual movie file instead of subtitle file)
 			if (!newMediaInfo.open(getInferredMediaFile())) {
 				throw new RuntimeException(String.format("Cannot open media file: %s", mediaFile));
 			}
diff --git a/source/net/sourceforge/tuned/FastFile.java b/source/net/sourceforge/tuned/FastFile.java
index 9a5d8995..9e042249 100644
--- a/source/net/sourceforge/tuned/FastFile.java
+++ b/source/net/sourceforge/tuned/FastFile.java
@@ -13,6 +13,7 @@ public class FastFile extends File {
 	private Long length;
 	private Boolean isDirectory;
 	private Boolean isFile;
+	private Boolean exists;
 	
 	
 	public FastFile(String path) {
@@ -31,6 +32,12 @@ public class FastFile extends File {
 	}
 	
 
+	@Override
+	public boolean exists() {
+		return exists != null ? exists : (exists = super.exists());
+	}
+	
+
 	@Override
 	public boolean isDirectory() {
 		return isDirectory != null ? isDirectory : (isDirectory = super.isDirectory());