diff --git a/ChangeLog b/ChangeLog
index afe51d6..7c10050 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,8 @@
 2003 Apr 22
 
     * Added library reference documentation generated by autogsdoc.
-
+    * Added TroubleShooting.txt document
+    
 2003 Apr 21  Stefan Urbanek <urbanek@host.sk>
 
     * Version 0.7.1
diff --git a/Documentation/TroubleShooting.txt b/Documentation/TroubleShooting.txt
new file mode 100644
index 0000000..5a7b7cc
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+++ b/Documentation/TroubleShooting.txt
@@ -0,0 +1,22 @@
+Trouble Shooting
+----------------
+
+- Language of a script cannot be recognized.
+
+- It is not possible to see some scripts in the scripts panel.
+          
+    StepTalk is trying to determine script language by the file extension.
+    Each language has a extension list of files which contain scripts in
+    that language. To prevend expensive searching for file extensions in
+    languages, StepTalk uses a dictionary with file-language mapping. That 
+    dictionary is stored in ~/Library/StepTalk/Configuration and is created
+    first time you use some StepTalk tool. If you install new language, that
+    file has to be updated.
+    
+    Solution:
+
+    Run in terminal:
+
+        > stupdate_languages
+
+