diff --git a/ChangeLog b/ChangeLog
index b9fb39dc3..70ef98089 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,8 @@
-2009-12-22 Holger Vogt
+2009-12-29 Holger Vogt
+ * ngproc2mod.c: patch by R. Larice
+   gnuplot.c filename arrays enlarged
+ 
+2009-12-28 Holger Vogt
  * measure.c: comments, 
    /examples/control_structs/repeat3.sp: new examples snippets included
 
diff --git a/src/frontend/plotting/gnuplot.c b/src/frontend/plotting/gnuplot.c
index b3ee771fe..8785b85fe 100644
--- a/src/frontend/plotting/gnuplot.c
+++ b/src/frontend/plotting/gnuplot.c
@@ -32,8 +32,8 @@ ft_gnuplot(double *xlims, double *ylims, char *filename, char *title, char *xlab
     bool xlog, ylog, nogrid, markers;
     char buf[BSIZE_SP], pointstyle[BSIZE_SP], *text;
 
-    char filename_data[15];
-    char filename_plt[15];
+    char filename_data[128];
+    char filename_plt[128];
 
     sprintf(filename_data, "%s.data", filename);
     sprintf(filename_plt, "%s.plt", filename);
@@ -111,7 +111,7 @@ ft_gnuplot(double *xlims, double *ylims, char *filename, char *title, char *xlab
 	fprintf( file, "set ylabel \"%s\"\n", text );
 	tfree(text);
     }
-    if (nogrid) {
+    if (!nogrid) {
 	fprintf( file, "set grid\n" );
     }
     if (xlog) {
@@ -142,8 +142,9 @@ ft_gnuplot(double *xlims, double *ylims, char *filename, char *title, char *xlab
     fprintf( file, "#set ytics 1\n" );
     fprintf( file, "#set y2tics 1\n" );
 
+    fprintf( file, "set style line 1 lw %d\n", linewidth );
+
 /* TODO
-    fprintf( file, "LineWidth: %d\n", linewidth );
     if (plottype == PLOT_COMB) {
 	fprintf( file, "BarGraph: True\n" );
 	fprintf( file, "NoLines: True\n" );
@@ -198,7 +199,7 @@ ft_gnuplot(double *xlims, double *ylims, char *filename, char *title, char *xlab
     (void) fclose( file_data );
 
 #if defined(__MINGW32__) || defined(_MSC_VER)
-    (void) sprintf( buf, "wgnuplot -persist %s", filename_plt );
+    (void) sprintf( buf, "wgnuplot -persistent %s", filename_plt );
 #else
     (void) sprintf( buf, "gnuplot %s &", filename );
 #endif
diff --git a/src/ngproc2mod.c b/src/ngproc2mod.c
index a49992cc8..d50d6c6eb 100644
--- a/src/ngproc2mod.c
+++ b/src/ngproc2mod.c
@@ -110,7 +110,7 @@ main(void) {
             ncur = (nmod *)tmalloc(sizeof(nmod));
             ncur->nnext = NULL;
             ncur->nname = typeline;
-            *(typeline+3) = (char)NULL;
+            *(typeline+3) = '\0';
             typeline += 4;
             getdata(ncur->nparms,69,3);
             ncur->nnext = nlist;
@@ -119,7 +119,7 @@ main(void) {
             pcur = (pmod *)tmalloc(sizeof(pmod));
             pcur->pnext = NULL;
             pcur->pname = typeline;
-            *(typeline+3) = (char)NULL;
+            *(typeline+3) = '\0';
             typeline += 4;
             getdata(pcur->pparms,69,3);
             pcur->pnext = plist;
@@ -128,7 +128,7 @@ main(void) {
             ycur = (ymod *)tmalloc(sizeof(ymod));
             ycur->ynext = NULL;
             ycur->yname = typeline;
-            *(typeline+3) = (char)NULL;
+            *(typeline+3) = '\0';
             typeline += 4;
             getdata(ycur->yparms,10,5);
             ycur->ynext = ylist;
@@ -137,7 +137,7 @@ main(void) {
             dcur = (dmod *)tmalloc(sizeof(dmod));
             dcur->dnext = NULL;
             dcur->dname = typeline;
-            *(typeline+3) = (char)NULL;
+            *(typeline+3) = '\0';
             typeline += 4;
             getdata(dcur->dparms,10,5);
             dcur->dnext = dlist;
@@ -146,7 +146,7 @@ main(void) {
             mcur = (mmod *)tmalloc(sizeof(mmod));
             mcur->mnext = NULL;
             mcur->mname = typeline;
-            *(typeline+3) = (char)NULL;
+            *(typeline+3) = '\0';
             typeline += 4;
             getdata(mcur->mparms,10,5);
             mcur->mnext = mlist;