What do these messages mean?

Knight Online file and patch errors
MessageMeaning
Invalid Data Tables The game couldn't read the table (TBL) files in its Data folder (as reported by players)
Invalid file installed. Please reinstall the program. Game files are invalid or damaged; reinstall
Program is outdated or incorrect. Program will be terminated. The client is old or broken; get the current client
Archive open failed / Archive close failed The downloaded patch archive couldn't be opened or closed
Extract failed Patch files couldn't be extracted from the archive
The central directory was not found… Retry? The patch archive arrived incomplete or damaged
Auto-patch Failed. Refer to the homepage for notices. The automatic update failed; check the announcements

"Files are being packed", "Decompressing files" and "Checking version" are normal launcher steps, not errors. If you're stuck on one of them for a long time, it's one of the causes below.

How do you fix Invalid Data Tables?

  1. Close the game and the launcher. The update can't write files while the game is open.
  2. Check your antivirus quarantine: if a game file was removed, restore it and add the game folder as an exclusion.
  3. On Steam: Library → Knight Online → Properties → Installed Files → "Verify integrity of game files". Missing or damaged files download again.
  4. On the Turkish client: uninstall and do a clean install from the official download page.
  5. Don't put files other people share into the Data folder. Using modified TBL files gets accounts banned: What is TBL in Knight Online? TBL errors and why TBL gets you banned.

Archive open failed and The central directory was not found

Both messages mean the downloaded patch archive arrived damaged. Close and reopen the launcher first so the update downloads again. If it repeats, the network is the likely cause: players say the error went away when they downloaded the patch over their phone's mobile data. You can switch back to your home network once the patch is done.

Detailed steps for Extract failed and patches that won't download are in Knight Online download and install: official download page, system requirements and first launch: the game still running during the patch is the usual cause, and if it won't download with the game closed, the servers may be down for maintenance.

If the launcher hangs on Checking version

"Checking version" is where the launcher compares versions with the server. If it stays there, the launcher can't reach the server: check for maintenance, restart the modem and try another network. For connection errors see Error 10060 and Login Server Connection Failed.

FAQ

What does the data tbl error mean in Knight Online?
A table file in the Data folder can't be read. Don't try to fix the file by hand; verify files on Steam or do a clean install from the official page.
Does Invalid Data Tables mean I'm banned?
The message itself isn't a ban, it's a file error. But if you're getting it because of modified TBL files, using those files is a bannable offence.
It's stuck on Files are being packed. What should I do?
That's a normal step and can take a while on big updates. If it runs past 15–20 minutes, close and reopen the launcher.
What is Game Update False?
This message, as players report it, means the update didn't complete. Reopen the launcher; if it persists, check for maintenance and do a clean install.

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