diff --git a/icon/folder-open-yellow-plus.png b/icon/folder-open-yellow-plus.png
new file mode 100644
index 000000000..06eea2287
Binary files /dev/null and b/icon/folder-open-yellow-plus.png differ
diff --git a/icon/folder-open-yellow.png b/icon/folder-open-yellow.png
new file mode 100644
index 000000000..e10bc1ea7
Binary files /dev/null and b/icon/folder-open-yellow.png differ
diff --git a/icon/folder-yellow-plus.png b/icon/folder-yellow-plus.png
new file mode 100644
index 000000000..92e36dd40
Binary files /dev/null and b/icon/folder-yellow-plus.png differ
diff --git a/icon/folder-yellow.png b/icon/folder-yellow.png
new file mode 100644
index 000000000..4c4c2c977
Binary files /dev/null and b/icon/folder-yellow.png differ
diff --git a/swad_changelog.h b/swad_changelog.h
index f566883e3..7c8091ff5 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -345,6 +345,8 @@ Buenos d
 // TODO: Un administrador de centro ahora no tiene permisos para editar horario asignatura, pero le sale el icono de editar
 //	 O le damos permisos o quitamos el icono de editar. Comprobar para admin. de titulaciones.
 
+// TODO: Actualizar ayuda en GitHub, por ejemplo Preferencias ahora es Ajustes.
+
 // TODO: Chequear todas las directivas <label>
 
 // TODO: Fix bug: Al mostrar una orla con todos los profesores de SWAD, se muestran primeros los profesores y luego los no editores (repetidos algunos)
@@ -370,12 +372,20 @@ En OpenSWAD:
 ps2pdf source.ps destination.pdf
 */
 
-#define Log_PLATFORM_VERSION	"SWAD 18.33 (2019-01-12)"
+#define Log_PLATFORM_VERSION	"SWAD 18.33.1 (2019-01-15)"
 #define CSS_FILE		"swad18.33.css"
 #define JS_FILE			"swad18.32.1.js"
 /*
+	Version 18.33.1:  Jan 15, 2019 	Fixed bug in file browser, reported by Miguel Damas.
+					SVG icons for folders in file browser. (239076 lines)
+					Copy the following icons to icon public directory:
+sudo cp icon/folder-yellow.png /var/www/html/swad/icon/
+sudo cp icon/folder-open-yellow.png /var/www/html/swad/icon/
+sudo cp icon/folder-yellow-plus.png /var/www/html/swad/icon/
+sudo cp icon/folder-open-yellow-plus.png /var/www/html/swad/icon/
+
 	Version 18.33:    Jan 11, 2019 	Code refactoring related to icons. (239066 lines)
-					Copy the following icon to icon public directory:
+					Copy the following icons to icon public directory:
 sudo cp icon/square.svg /var/www/html/swad/icon/
 sudo cp icon/check-square.svg /var/www/html/swad/icon/
 
diff --git a/swad_course.h b/swad_course.h
index a5f500d2d..b132ea830 100644
--- a/swad_course.h
+++ b/swad_course.h
@@ -81,7 +81,7 @@ struct Course
    char InstitutionalCrsCod[Crs_MAX_BYTES_INSTITUTIONAL_CRS_COD + 1];	// Institutional code of the course
    long DegCod;
    unsigned Year;				// Year: 0 (optatives), 1, 2, 3...
-   Crs_Status_t Status;				// Course status
+   unsigned Status;				// Course status
    long RequesterUsrCod;			// User code of the person who requested the creation of this course
    char ShrtName[Hie_MAX_BYTES_SHRT_NAME + 1];	// Short name of course
    char FullName[Hie_MAX_BYTES_FULL_NAME + 1];	// Full name of course
diff --git a/swad_file_browser.c b/swad_file_browser.c
index ef28e25c3..d19e0dd02 100644
--- a/swad_file_browser.c
+++ b/swad_file_browser.c
@@ -6105,12 +6105,12 @@ static void Brw_PutIconShow (unsigned Level,const char *PathInTree,const char *F
 	     FileNameToShow);
    fprintf (Gbl.F.Out,"<input type=\"image\" src=\"%s/eye-slash.svg\""
 	              " alt=\"%s\" title=\"%s\""
-	              " class=\"%sCONTEXT_ICO\" />",
+	              " class=\"CONTEXT_OPT %s CONTEXT_ICO_16x16\" />",
             Gbl.Prefs.URLIcons,
             Gbl.Title,
             Gbl.Title,
-            Brw_CheckIfAnyUpperLevelIsHidden (Level) ? "ICO_HIDDEN " :
-        	                                       "");
+            Brw_CheckIfAnyUpperLevelIsHidden (Level) ? "ICO_HIDDEN" :
+        	                                       "ICO_HIGHLIGHT");
    Frm_EndForm ();
    fprintf (Gbl.F.Out,"</td>");
   }
@@ -6133,12 +6133,12 @@ static void Brw_PutIconHide (unsigned Level,const char *PathInTree,const char *F
 	     FileNameToShow);
    fprintf (Gbl.F.Out,"<input type=\"image\" src=\"%s/eye.svg\""
 	              " alt=\"%s\" title=\"%s\""
-	              " class=\"%sCONTEXT_ICO\" />",
+	              " class=\"CONTEXT_OPT %s CONTEXT_ICO_16x16\" />",
             Gbl.Prefs.URLIcons,
             Gbl.Title,
             Gbl.Title,
-            Brw_CheckIfAnyUpperLevelIsHidden (Level) ? "ICO_HIDDEN " :
-        	                                       "");
+            Brw_CheckIfAnyUpperLevelIsHidden (Level) ? "ICO_HIDDEN" :
+        	                                       "ICO_HIGHLIGHT");
    Frm_EndForm ();
    fprintf (Gbl.F.Out,"</td>");
   }
@@ -6260,14 +6260,14 @@ static void Brw_PutIconFolderWithoutPlus (const char *FileBrowserId,const char *
    fprintf (Gbl.F.Out,">");
 
    /***** Form and icon *****/
-   fprintf (Gbl.F.Out,"<img src=\"%s/folder-%s16x16.gif\""
-			    " alt=\"%s\" title=\"%s\""
-			    " class=\"ICO20x20\" />",
-		  Gbl.Prefs.URLIcons,
-		  Open ? "open" :
-			 "closed",
-		  Txt_Folder,
-		  Txt_Folder);
+   fprintf (Gbl.F.Out,"<img src=\"%s/%s\""
+		      " alt=\"%s\" title=\"%s\""
+		      " class=\"CONTEXT_OPT CONTEXT_ICO_16x16\" />",
+	    Gbl.Prefs.URLIcons,
+	    Open ? "folder-open-yellow.png" :
+	           "folder-yellow.png",
+	    Txt_Folder,
+	    Txt_Folder);
 
    /***** End container *****/
    fprintf (Gbl.F.Out,"</div>");
@@ -6302,8 +6302,8 @@ static void Brw_PutIconFolderWithPlus (const char *FileBrowserId,const char *Row
    snprintf (Gbl.Title,sizeof (Gbl.Title),
 	     Txt_Upload_file_or_create_folder_in_FOLDER,
 	     FileNameToShow);
-   Ico_PutIconLink (Open ? "folder-open-plus16x16.gif" :
-	                   "folder-closed-plus16x16.gif",
+   Ico_PutIconLink (Open ? "folder-open-yellow-plus.png" :
+	                   "folder-yellow-plus.png",
 	            Gbl.Title);
    Frm_EndForm ();
 
@@ -6377,15 +6377,16 @@ static void Brw_PutIconFile (unsigned Size,Brw_FileType_t FileType,const char *F
    bool NotFound;
 
    /***** Icon depending on the file extension *****/
-   fprintf (Gbl.F.Out,"<img src=\"%s/%s%ux%u/",
-            Gbl.Prefs.URLIcons,Cfg_ICON_FOLDER_FILEXT,
-            Size,Size);
    if (FileType == Brw_IS_LINK)
-      fprintf (Gbl.F.Out,"url%ux%u.gif\" alt=\"%s\" title=\"%s\"",
-	       Size,Size,
+      fprintf (Gbl.F.Out,"<img src=\"%s/link.svg\""
+	                 " alt=\"%s\" title=\"%s\"",
+	       Gbl.Prefs.URLIcons,
 	       Txt_Link,Txt_Link);
    else	// FileType == Brw_IS_FILE
      {
+      fprintf (Gbl.F.Out,"<img src=\"%s/%s%ux%u/",
+	       Gbl.Prefs.URLIcons,Cfg_ICON_FOLDER_FILEXT,
+	       Size,Size);
       for (DocType = 0, NotFound = true;
 	   DocType < Ext_NUM_FILE_EXT_ALLOWED && NotFound;
 	   DocType++)
@@ -6402,8 +6403,9 @@ static void Brw_PutIconFile (unsigned Size,Brw_FileType_t FileType,const char *F
 	 fprintf (Gbl.F.Out,"xxx%ux%u.gif\" alt=\"\"",
 	          Size,Size);
      }
-   fprintf (Gbl.F.Out,(Size == 16) ? " class=\"CONTEXT_ICO_16x16\"/>" :
-	                             " class=\"ICO40x40\"/>");
+   fprintf (Gbl.F.Out," class=\"CONTEXT_OPT ICO_HIGHLIGHT %s\"/>",
+	    (Size == 16) ? "CONTEXT_ICO_16x16" :
+		           "ICO40x40");
   }
 
 /*****************************************************************************/