older version for rasplex, hope it works.

server/render.c

@@ -310,6 +310,9 @@ render_string(Widget *w, int left, int top, int right, int bottom, int fy)
 
 	if ((w != NULL) && (w->text != NULL) &&
 	    (w->x > 0) && (w->y > 0) && (w->y > fy) && (w->y <= bottom - top)) {
+		int length;
+		char str[BUFSIZE];
+
 		/*
 		 * FIXME: Could be a bug here? w->x is recalculated (On first
 		 * call only? Is it preserved between calls?) and first
@@ -317,7 +320,10 @@ render_string(Widget *w, int left, int top, int right, int bottom, int fy)
 		 * strings totally off-screen. Is this on purpose? (M. Dolze)
 		 */
 		w->x = min(w->x, right - left);
-		drivers_string(w->x + left, w->y + top, w->text);
+		length = min(right - left - w->x + 1, sizeof(str)-1);
+		strncpy(str, w->text, length);
+		str[length] = '\0';
+		drivers_string(w->x + left, w->y + top, str);
 	}
 	return 0;
 }