diff --git a/Error-messages.md b/Error-messages.md
index 377ecd0..4fa5ec6 100644
--- a/Error-messages.md
+++ b/Error-messages.md
@@ -22,4 +22,7 @@
 * Specified file is damaged and cannot be processed.
 
 ### Target directory is not writable
-* KCC don't have rights to create files in directory containing source files.
\ No newline at end of file
+* KCC don't have rights to create files in directory containing source files.
+
+### Failed to open source file/directory
+* For unknown reasons source files are not available.