diff --git a/src/com/bytezone/diskbrowser/utilities/LZW.java b/src/com/bytezone/diskbrowser/utilities/LZW.java
index 1d206d8..1d47edd 100644
--- a/src/com/bytezone/diskbrowser/utilities/LZW.java
+++ b/src/com/bytezone/diskbrowser/utilities/LZW.java
@@ -131,8 +131,8 @@ class LZW
     int calculatedCrc = Utility.getCRC (buffer, length, crcBase);
     if (crc != calculatedCrc)
     {
-      System.out.printf ("%n*** LZW CRC mismatch ***  %04X  %04X%n", crc, calculatedCrc);
-      //      throw new FileFormatException ("File CRC failed");
+      System.out.printf ("%n*** Thread CRC failed ***  %04X  %04X%n", crc, calculatedCrc);
+      //      throw new FileFormatException ("Thread CRC failed");
     }
 
     return buffer;
diff --git a/src/com/bytezone/diskbrowser/utilities/NuFX.java b/src/com/bytezone/diskbrowser/utilities/NuFX.java
index db3e7ca..a0ecbe4 100644
--- a/src/com/bytezone/diskbrowser/utilities/NuFX.java
+++ b/src/com/bytezone/diskbrowser/utilities/NuFX.java
@@ -44,11 +44,6 @@ public class NuFX
     for (int rec = 0; rec < masterHeader.getTotalRecords (); rec++)
     {
       Record record = new Record (buffer, dataPtr);
-      //      if (record.getFileSystemID () != 1)
-      //      {
-      //        System.out.println ("Not Prodos: " + record.getFileSystemID ());
-      //        break;
-      //      }
       records.add (record);
 
       if (debug)
@@ -131,13 +126,12 @@ public class NuFX
     }
     else if (totalFiles > 0)
     {
-      int[] diskSizes = { 280, 800, 1600, 3200, 6400, 65536 };
-      //      System.out.printf ("Files require: %d blocks%n", totalBlocks);
-
       // choose Volume Name
       String volumeName = "DiskBrowser";
       int nameOffset = 0;
 
+      // should check that files are all in prodos format
+
       if (paths.size () == 1)                         // exactly one directory path
       {
         String onlyPath = paths.get (0);
@@ -149,9 +143,9 @@ public class NuFX
         nameOffset = volumeName.length () + 1;        // skip volume name in all paths
       }
 
+      int[] diskSizes = { 280, 800, 1600, 3200, 6400, 65536 };
       for (int diskSize : diskSizes)      // in case we choose a size that is too small
       {
-        //        System.out.printf ("Checking %d %d%n", diskSize, totalBlocks);
         if (diskSize < (totalBlocks + 10))
           continue;
 
@@ -202,19 +196,6 @@ public class NuFX
     return null;
   }
 
-  // ---------------------------------------------------------------------------------//
-  public byte[] getFileBuffer (String fileName)
-  // ---------------------------------------------------------------------------------//
-  {
-    for (Record record : records)
-      if (record.hasFile (fileName))
-        for (Thread thread : record.threads)
-          if (thread.hasFile ())
-            return thread.getData ();
-
-    return null;
-  }
-
   // ---------------------------------------------------------------------------------//
   public int getTotalFiles ()
   // ---------------------------------------------------------------------------------//
diff --git a/src/com/bytezone/diskbrowser/utilities/Record.java b/src/com/bytezone/diskbrowser/utilities/Record.java
index 47bc4e1..9495fe3 100644
--- a/src/com/bytezone/diskbrowser/utilities/Record.java
+++ b/src/com/bytezone/diskbrowser/utilities/Record.java
@@ -70,8 +70,8 @@ class Record
 
     if (crc != Utility.getCRC (crcBuffer, crcBuffer.length, 0))
     {
-      System.out.println ("***** Header CRC mismatch *****");
-      throw new FileFormatException ("Header CRC failed");
+      System.out.println ("***** Record CRC mismatch *****");
+      throw new FileFormatException ("Record CRC failed");
     }
 
     if (fileNameLength > 0)
@@ -246,6 +246,7 @@ class Record
         fileSystems[fileSystemID]));
     text.append (String.format ("Separator ...... %s%n", separator));
     text.append (String.format ("Access ......... %s  %s%n", bits, decode));
+
     if (storType < 16)
     {
       text.append (String.format ("File type ...... %02X     %s%n", fileType,
@@ -260,6 +261,7 @@ class Record
       text.append (String.format ("Total blocks ... %,d%n", auxType));
       text.append (String.format ("Block size ..... %,d%n", storType));
     }
+
     text.append (String.format ("Created ........ %s%n", created.format ()));
     text.append (String.format ("Modified ....... %s%n", modified.format ()));
     text.append (String.format ("Archived ....... %s%n", archived.format ()));
diff --git a/src/com/bytezone/diskbrowser/utilities/Thread.java b/src/com/bytezone/diskbrowser/utilities/Thread.java
index b14e3e4..85130e4 100644
--- a/src/com/bytezone/diskbrowser/utilities/Thread.java
+++ b/src/com/bytezone/diskbrowser/utilities/Thread.java
@@ -50,20 +50,20 @@ class Thread
 
     switch (threadFormat)
     {
-      case 0:                   // uncompressed
+      case 0:                         // uncompressed
         break;
-      case 1:                   // Huffman Squeeze
+      case 1:                         // Huffman Squeeze
         break;
-      case 2:                   // Dynamic LZW/1
+      case 2:                         // Dynamic LZW/1
         lzw = new LZW1 (data);
         break;
-      case 3:                   // Dynamic LZW/2
+      case 3:                         // Dynamic LZW/2
         int crcLength = threadKind == 1 ? 0 : uncompressedEOF;
         lzw = new LZW2 (data, threadCrc, crcLength);
         break;
-      case 4:                   // Unix 12-bit compress
+      case 4:                         // Unix 12-bit compress
         break;
-      case 5:                   // Unix 16-bit compress
+      case 5:                         // Unix 16-bit compress
         break;
     }
 
@@ -118,6 +118,7 @@ class Thread
             break;
 
           case 1:                       // undefined
+            break;
           case 2:                       // undefined
             break;
         }
@@ -223,5 +224,4 @@ class Thread
 
     return text.toString ();
   }
-
 }
\ No newline at end of file