diff --git a/backend/raster.c b/backend/raster.c
index 5705ed91..31dfa863 100644
--- a/backend/raster.c
+++ b/backend/raster.c
@@ -1165,7 +1165,8 @@ INTERNAL int plot_raster(struct zint_symbol *symbol, int rotate_angle, int file_
     int error;
 
 #ifdef NO_PNG
-    if (file_type == OUT_PNG_FILE) {
+    if (file_type == OUT_PNG_FILE) {
+		strcpy(symbol->errtxt, "660: PNG format disabled on compile time");
         return ZINT_ERROR_INVALID_OPTION;
     }
 #endif /* NO_PNG */
diff --git a/backend_tcl/configure.in b/backend_tcl/configure.in
index b07053a0..fc99baf0 100644
--- a/backend_tcl/configure.in
+++ b/backend_tcl/configure.in
@@ -14,7 +14,7 @@
 # so you can encode the package version directly into the source files.
 #-----------------------------------------------------------------------
 
-AC_INIT([zint], [2.7.1])
+AC_INIT([zint], [2.8.0])
 
 #--------------------------------------------------------------------
 # Call TEA_INIT as the first TEA_ macro to set up initial vars.
diff --git a/backend_tcl/lib/zint/pkgIndex.tcl b/backend_tcl/lib/zint/pkgIndex.tcl
index 8b4560d1..62b606fe 100644
--- a/backend_tcl/lib/zint/pkgIndex.tcl
+++ b/backend_tcl/lib/zint/pkgIndex.tcl
@@ -1,2 +1,2 @@
-package ifneeded zint 2.7.1\
+package ifneeded zint 2.8.0\
     [list load [file join $dir zint[info sharedlibextension]]]
diff --git a/backend_tcl/readme.txt b/backend_tcl/readme.txt
index f9848531..537fb228 100644
--- a/backend_tcl/readme.txt
+++ b/backend_tcl/readme.txt
@@ -7,16 +7,19 @@
 What: tcl binding for zint bar code generator library
 
 Build:
+The header files of a TCL and Tk build are required for the build.
+
 - MS-VC6 project file "zint_tcl.dsp" may be opened by the GUI.
-- Linux/Unix build is no issue in principe but is not done jet
+- Linux/Unix build is provided by the configure script.
+  Thanks to Christian Werner for that.
 
 Usage:
 
 load zint.dll
 zint help
 
-Most options are identical to the command line tool and are described in the
-zint manual.
+Most options are identical to the command line tool.
+Details may be found in the zint manual.
 
 Demo:
-The demo folder contains a minimal visual demo program.
+The demo folder contains a visual demo program.
diff --git a/backend_tcl/zint.c b/backend_tcl/zint.c
index efc7f29e..b1ac1282 100644
--- a/backend_tcl/zint.c
+++ b/backend_tcl/zint.c
@@ -70,7 +70,9 @@
  2020-02-01 2.7.1 HaO
  -	Framework 2.7.1 update
  2020-04-06 HaO
- -	Added option -fullmultibyte
+ -	Added option -fullmultibyte
+ 2020-04-07 2.8.0 HaO
+ - Added symbology "UltraCode".
 */
 
 #if defined(__WIN32__) || defined(_WIN32) || defined(WIN32)
@@ -110,7 +112,7 @@
 /*----------------------------------------------------------------------------*/
 /* > File option defines */
 
-#define VERSION "2.7.1"
+#define VERSION "2.8.0"
 
 /*----------------------------------------------------------------------------*/
 /* >>>>> Hepler defines */
@@ -224,7 +226,8 @@ static char *s_code_list[] = {
     "Channel",
     "CodeOne",
     "GridMatrix",
-    "UPNQR",
+    "UPNQR",
+	"UltraCode",
     "rMQR",
     NULL};
 
@@ -320,7 +323,8 @@ static int s_code_number[] = {
     BARCODE_CHANNEL,
     BARCODE_CODEONE,
     BARCODE_GRIDMATRIX,
-    BARCODE_UPNQR,
+    BARCODE_UPNQR,
+	BARCODE_ULTRA,
     BARCODE_RMQR,
     0};