--- htk_3.4.1/HTKTools/HLRescore.c	2009-03-12 18:52:51.000000000 +0000
+++ htk_3.4.2/HTKTools/HLRescore.c	2009-11-22 12:37:35.435000000 +0000
@@ -93,9 +93,9 @@
 static Lattice *wpNet;          /* the word level recognition network */
 static Vocab vocab;		/* wordlist or dictionary */
 
-static char *startWord;         /* word at start of Lattice (!SENT_START) */
+static char *startWord = "!SENT_START";/* word at start of Lattice (!SENT_START) */
 static LabId startLab;          /* corresponding LabId */
-static char *endWord;           /* word at end of Lattice (!SENT_END) */
+static char *endWord = "!SENT_END";/* word at end of Lattice (!SENT_END) */
 static LabId endLab;            /* corresponding LabId */
 static LabId nullLab;           /* !NULL LabId */
 static char *startLMWord;       /* word at start in LM (<s>) */
--- htk_3.4.1/HTKLib/HLabel.c	2009-03-12 18:44:22.000000000 +0000
+++ htk_3.4.2/HTKLib/HLabel.c	2009-11-22 12:40:50.007000000 +0000
@@ -197,6 +197,7 @@
    int h;
    NameCell *p;
 
+   if (!name) HError(6570,"GetLabId: no label given");
    ++numAccesses; ++numTests;
    if ((trace&T_HASH) && numAccesses%100 == 0) 
       PrintNameTabStats();