One of the most common problems on the Metin2 client side Python traceback are mistakes. The client may close while opening, the login screen may not appear, the game may close when the inventory or a special window opens, or error lines belonging to Python files may be seen in syserr.txt.

These errors are usually rootpack, uiscript, local interface files, is caused by missing import, wrong function name or broken Python syntax.

1. What is Python Traceback?

Traceback is the error output in which Python shows which file and which line has a problem when an error occurs. In Metin2 client syserr.txt it usually looks like this:

Traceback (most recent call last):
  File "uiInventory.py", line 123, in OnPressEscapeKey
AttributeError: 'InventoryWindow' object has no attribute 'Close'

error in this example uiInventory.py It occurred on line 123 of the file. If the type of error is AttributeError It appears as .

2. Checking the Client Syserr File

The first control file on the client side is usually in the client folder. syserr.txt is the file.

Client klasorunde syserr.txt dosyasini acin ve en alttaki yeni hatalari kontrol edin.

The most important part of the error is usually the bottom lines. Because in Python traceback, the top lines show the call sequence and the bottom line shows the actual error type.

3. Most Common Types of Python Errors

• SyntaxError: There is a typo. Parentheses, colons, or quotes may be missing.
• AttributeError: The called function or variable does not exist in the relevant object.
• NameError: The name used is not defined.
• ImportError: The required Python file or module was not found.
• TypeError: The wrong type or wrong number of parameters were sent to the function.
• KeyError: A key that is not in the dictionary was called.

These error types do not directly show the solution, but they tell you which direction you should look.

4. Root Pack Errors

The root pack contains most of the client-side Python files. For example:

• ui.py
• game.py
• interfaceModule.py
• uiInventory.py
• uiCharacter.py
• uiScriptLocale.py
• constInfo.py

Incorrect editing in the root file may cause the client not to open or to close when a certain window is opened.

General check order for root errors:

• Identify the last modified Python file.
• Find the file and line number in syserr.txt.
• Check for missing import or wrong function name.
• Check Python indentations.
• Make sure the file is actually updated when repackaging the root pack.

5. UI Script Errors

Metin2 client interface windows often uiscript It is defined by files. These files contain window size, button location, image path, text area and child objects.

Uiscript errors may have the following symptoms:

• Client closes when a specific window is opened
• The window opens but the buttons are not visible
• Interface objects overlap
• LoadScriptFile error occurs in syserr
• GetChild error occurs on Python side

Example GetChild error:

KeyError: 'board'
AttributeError: 'NoneType' object has no attribute 'SetEvent'

In such errors, the Python file may be calling an object that does not exist in uiscript.

6. Resolving GetChild Errors

Let's assume that there is a code like this on the Python side:

self.GetChild("accept_button")

In this case in uiscript file accept_button The child object named must actually exist. If the name is different or does not exist at all, the client may throw an error.

For the solution:

• Check the name GetChild in the Python file.
• Check the name field in the uiscript file.
• Pay attention to the case difference.
• Make sure that the newly added button or text object is under the correct parent.

7. Missing File and Pack Problems

The following types of errors may occur in client siserr:

No file or directory
LoadScriptFile Error
CANNOT_FIND_PACK_FILE
Failed to load image

In this case, the relevant file may not have been added to the package, it may have been placed in the wrong folder, or the path may have been written incorrectly.

In particular, the following file types should be checked:

• .py Python files
• .pyc compiled Python files
• .py uiscript files
• .tga, .dds, .sub image files
• local interface files

8. Encoding and Turkish Character Problems

In some old client infrastructures, using incorrect encoding in Python files or locale files may cause client errors. Especially if Turkish characters are recorded incorrectly, the text may appear distorted or the file may not be readable.

Things to consider:

• Keep the existing encoding structure of the file.
• Do not break the character set when saving files between different editors.
• Pay attention to the use of ş, ç, ğ, ü, ö, ı in files that do not support Turkish characters.
• UTF-8 may not always work smoothly on older infrastructures.

Common Mistakes

• Randomly changing root files without reading syserr.txt
• Breaking Python indentations
• Calling an object that is not in Uiscript with GetChild in Python
• Thinking the pack has been updated and testing with the old client
• Not adding missing image files to the client
• Preventing the file from being read by corrupting the encoding structure

FAQ

The client opens but closes when the inventory is opened, why?
There may be an error in the Python or uiscript file related to the inventory. uiInventory.py and the related uiscript file should be checked via client syserr.

Which is the most important line in the traceback error?
Usually the error line at the bottom shows the real problem. The upper lines describe the call chain.

The game does not start after root pack change, what should I do?
Compare the last modified Python file with its old backup, check syserr.txt and make sure the package has actually been updated.

Safety and Operations Recommendations

• Be sure to take a backup before editing the root pack.
• After each change, clear the client syserr file and test again.
• Do small batch tests instead of bulk root changes.
• Test on a clean client before patching players.
• Do not change encoding and line ending format unconsciously.

This article is specially prepared for PvPServer.