solved bug 2072876.

bitmaps/makefile.include

@@ -306,6 +306,7 @@ OBJECTS = \
     Lang_Catalan.o\
     Lang_chinese.o\
     Lang_Default.o\
+    Lang_Cs.o\
     Lang_De.o\
     Lang_En.o\
     Lang_Es.o\

common/edaappl.cpp

@@ -53,7 +53,7 @@ struct LANGUAGE_DESCR
     bool          m_DoNotTranslate;                     // set to true if the m_Lang_Label must not be translated
 };
 
-#define LANGUAGE_DESCR_COUNT 15
+#define LANGUAGE_DESCR_COUNT 16
 static struct LANGUAGE_DESCR s_Language_List[LANGUAGE_DESCR_COUNT] =
 {
     {

eeschema/libedit_onleftclick.cpp

@@ -91,7 +91,7 @@ void WinEDA_LibeditFrame::OnLeftClick( wxDC* DC, const wxPoint& MousePos )
             break;
 
         case ID_LIBEDIT_PIN_BUTT:
-            if( CurrentDrawItem == NULL )
+            if( CurrentDrawItem == NULL || CurrentDrawItem->m_Flags == 0 )
             {
                 CreatePin( DC );
             }