diff --git a/contrib/uiuc/plugins/molfile_plugin/src/jsplugin.c b/contrib/uiuc/plugins/molfile_plugin/src/jsplugin.c
index e4285af..468411e 100644
--- a/contrib/uiuc/plugins/molfile_plugin/src/jsplugin.c
+++ b/contrib/uiuc/plugins/molfile_plugin/src/jsplugin.c
@@ -218,7 +218,7 @@ typedef struct {
 /* Use block-based I/O by default when writing structures larger */
 /* than JSBLOCKIO_THRESH atoms, or when directed by the user and */
 /* not otherwise prohibited...                                   */
-static int js_blockio_check_and_set(jshandle *js) {
+static void js_blockio_check_and_set(jshandle *js) {
   if ((getenv("VMDJSNOBLOCKIO") == NULL) && 
       ((js->natoms > JSBLOCKIO_THRESH) || getenv("VMDJSBLOCKIO"))) {
     js->optflags |= JSOPT_TS_BLOCKIO;
diff --git a/contrib/uiuc/plugins/molfile_plugin/src/moldenplugin.c b/contrib/uiuc/plugins/molfile_plugin/src/moldenplugin.c
index 5cca862..5f1e9f0 100644
--- a/contrib/uiuc/plugins/molfile_plugin/src/moldenplugin.c
+++ b/contrib/uiuc/plugins/molfile_plugin/src/moldenplugin.c
@@ -1280,7 +1280,7 @@ static int read_wave_coeffs(FILE *file, qm_wavefunction_t *wave) {
       
       // DEBUG
       //printf("moldenplugin) %d,%d: %d %f\n", i, AOid-1, AOid, wave_coeffs[i*wave->num_coeffs+AOid-1]);
-      nr2 = sscanf(buffer, "%s", &keystring);
+      nr2 = sscanf(buffer, "%s", keystring);
       if(!strcmp(keystring,"Ene=")||nr2==-1) 
         break;
 
diff --git a/contrib/uiuc/plugins/molfile_plugin/src/ply.h b/contrib/uiuc/plugins/molfile_plugin/src/ply.h
index 127844c..784378f 100644
--- a/contrib/uiuc/plugins/molfile_plugin/src/ply.h
+++ b/contrib/uiuc/plugins/molfile_plugin/src/ply.h
@@ -66,7 +66,7 @@ extern "C" {
 
 typedef struct PlyProperty {    /* description of a property */
 
-  char *name;                   /* property name */
+  const char *name;             /* property name */
   int external_type;            /* file's data type */
   int internal_type;            /* program's data type */
   int offset;                   /* offset bytes of prop in a struct */
@@ -222,7 +222,6 @@ void set_prop_rules_ply (PlyFile *, PlyRuleList *);
 PlyRuleList *append_prop_rule (PlyRuleList *, char *, char *);
 int matches_rule_name (char *);
 
-int equal_strings(char *, char *);
 char *recreate_command_line (int, char *argv[]);
 
 
diff --git a/contrib/uiuc/plugins/molfile_plugin/src/ply_c.h b/contrib/uiuc/plugins/molfile_plugin/src/ply_c.h
index 272d31a..31a7d5f 100644
--- a/contrib/uiuc/plugins/molfile_plugin/src/ply_c.h
+++ b/contrib/uiuc/plugins/molfile_plugin/src/ply_c.h
@@ -37,12 +37,12 @@ WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
 #include <string.h>
 #include <ply.h>
 
-char *type_names[] = {  /* names of scalar types */
+const char *type_names[] = {  /* names of scalar types */
 "invalid",
 "int8", "int16", "int32", "uint8", "uint16", "uint32", "float32", "float64",
 };
 
-char *old_type_names[] = {  /* old names of types for backward compatability */
+const char *old_type_names[] = {  /* old names of types for backward compatability */
 "invalid",
 "char", "short", "int", "uchar", "ushort", "uint", "float", "double",
 };
@@ -60,13 +60,14 @@ int ply_type_size[] = {
 #define NAMED_PROP       1
 
 /* returns 1 if strings are equal, 0 if not */
-int equal_strings(char *, char *);
+static
+int equal_strings(const char *, const char *);
 
 /* find an element in a plyfile's list */
-PlyElement *find_element(PlyFile *, char *);
+PlyElement *find_element(PlyFile *, const char *);
 
 /* find a property in an element's list */
-PlyProperty *find_property(PlyElement *, char *, int *);
+PlyProperty *find_property(PlyElement *, const char *, int *);
 
 /* write to a file the word describing a PLY file data type */
 void write_scalar_type (FILE *, int);
@@ -105,7 +106,7 @@ void ascii_get_element(PlyFile *, char *);
 void binary_get_element(PlyFile *, char *);
 
 /* memory allocation */
-static char *my_alloc(int, int, char *);
+static char *my_alloc(int, int, const char *);
 
 
 /*************/
@@ -188,9 +189,7 @@ PlyFile *open_for_writing_ply(
   int file_type
 )
 {
-  int i;
   PlyFile *plyfile;
-  PlyElement *elem;
   char *name;
   FILE *fp;
 
@@ -333,9 +332,7 @@ void element_count_ply(
   int nelems
 )
 {
-  int i;
   PlyElement *elem;
-  PlyProperty *prop;
 
   /* look for appropriate element */
   elem = find_element (plyfile, elem_name);
@@ -613,7 +610,6 @@ PlyFile *ply_read(FILE *fp, int *nelems, char ***elem_names)
   PlyFile *plyfile;
   int nwords;
   char **words;
-  int found_format = 0;
   char **elist;
   PlyElement *elem;
   char *orig_line;
@@ -656,7 +652,6 @@ PlyFile *ply_read(FILE *fp, int *nelems, char ***elem_names)
       else
         return (NULL);
       plyfile->version = atof (words[2]);
-      found_format = 1;
     }
     else if (equal_strings (words[0], "element"))
       add_element (plyfile, words, nwords);
@@ -1302,10 +1297,9 @@ void get_info_ply(PlyFile *ply, float *version, int *file_type)
 Compare two strings.  Returns 1 if they are the same, 0 if not.
 ******************************************************************************/
 
-int equal_strings(char *s1, char *s2)
+static
+int equal_strings(const char *s1, const char *s2)
 {
-  int i;
-
   while (*s1 && *s2)
     if (*s1++ != *s2++)
       return (0);
@@ -1361,7 +1355,7 @@ Exit:
   returns the element, or NULL if not found
 ******************************************************************************/
 
-PlyElement *find_element(PlyFile *plyfile, char *element)
+PlyElement *find_element(PlyFile *plyfile, const char *element)
 {
   int i;
 
@@ -1385,7 +1379,7 @@ Exit:
   returns a pointer to the property, or NULL if not found
 ******************************************************************************/
 
-PlyProperty *find_property(PlyElement *elem, char *prop_name, int *index)
+PlyProperty *find_property(PlyElement *elem, const char *prop_name, int *index)
 {
   int i;
 
@@ -1416,7 +1410,6 @@ void ascii_get_element(PlyFile *plyfile, char *elem_ptr)
   char **words;
   int nwords;
   int which_word;
-  FILE *fp = plyfile->fp;
   char *elem_data,*item;
   char *item_ptr;
   int item_size;
@@ -1697,7 +1690,6 @@ Exit:
 char **get_words(FILE *fp, int *nwords, char **orig_line)
 {
 #define BIG_STRING 4096
-  int i,j;
   static char str[BIG_STRING];
   static char str_copy[BIG_STRING];
   char **words;
@@ -2310,8 +2302,6 @@ Entry:
 
 void add_property (PlyFile *plyfile, char **words, int nwords)
 {
-  int prop_type;
-  int count_type;
   PlyProperty *prop;
   PlyElement *elem;
 
@@ -2421,7 +2411,7 @@ Entry:
   fname - file name from which memory was requested
 ******************************************************************************/
 
-static char *my_alloc(int size, int lnum, char *fname)
+static char *my_alloc(int size, int lnum, const char *fname)
 {
   char *ptr;
 
@@ -2759,9 +2749,7 @@ void describe_element_ply(
   int nelems
 )
 {
-  int i;
   PlyElement *elem;
-  PlyProperty *prop;
 
   /* look for appropriate element */
   elem = find_element (plyfile, elem_name);
@@ -2916,7 +2904,7 @@ void describe_other_elements_ply (
 
 typedef struct RuleName {
   int code;
-  char *name;
+  const char *name;
 } RuleName;
 
 RuleName rule_name_list[] = {
@@ -3043,10 +3031,6 @@ Entry:
 
 void start_props_ply (PlyFile *ply, PlyPropRules *rules)
 {
-  int i;
-  int count;
-  PlyElement *elem = rules->elem;
-
   /* save pointer to the rules in the PLY object */
   ply->current_rules = rules;
 
diff --git a/contrib/uiuc/plugins/molfile_plugin/src/plyplugin.cpp b/contrib/uiuc/plugins/molfile_plugin/src/plyplugin.cpp
index a0f6c8e..e79fb98 100644
--- a/contrib/uiuc/plugins/molfile_plugin/src/plyplugin.cpp
+++ b/contrib/uiuc/plugins/molfile_plugin/src/plyplugin.cpp
@@ -44,10 +44,6 @@ typedef struct Face {
   void *other_props;       /* other properties */
 } Face;
 
-char *elem_names[] = { /* list of the elements in the object */
-  "vertex", "face"
-};
-
 PlyProperty vert_props[] = { /* list of property information for a vertex */
   {"x", Float32, Float32, offsetof(Vertex,x), 0, 0, 0, 0},
   {"y", Float32, Float32, offsetof(Vertex,y), 0, 0, 0, 0},