If you are having an error while opening the client today - please follow the steps:

1. Go to %appdata%/Kasteria/Kasteria_v3.0
2. Copy lootconfig.otml, config.otml, minimap.otmm and hotkeys_1.otml
3. Remove Kasteria_v3.0 directory
4. Open client again
5. Close the client
6. Paste previously copied configs into Kasteria_v3.0 directory

Voila, client supposed to be open without any issues!
Legacy world starts in:
10 February 2026
Character information A
Name:Mateuusz
Gender:male
Profession:Elite Knight
Level:130
Residence:Thais
House:Central Plaza 3 (Carlin) is paid until Jan 1 1970
Guild Membership:Leader of the PSYCHIATRYK
Last Login:17 February 2026
Account Status:Premium Account
Created:9 February 2026
Last experience
DateExperience
16/02 7:00 - 17/02 7:00This player has gained 3,177,456 experience this day.
15/02 7:00 - 16/02 7:00This player has lost -2,927,045 experience this day.
14/02 7:00 - 15/02 7:00This player has gained 5,178,088 experience this day.
13/02 7:00 - 14/02 7:00This player has gained 8,570,521 experience this day.
12/02 7:00 - 13/02 7:00This player has gained 6,975,648 experience this day.
11/02 7:00 - 12/02 7:00This player has gained 9,247,899 experience this day.
10/02 7:00 - 11/02 7:00This player has gained 2,119,018 experience this day.
Latest deaths
17 Feb 2026, 13:15killed at level 130 by Tempo'Dens
17 Feb 2026, 12:49killed at level 130 by Tempo'Povix
16 Feb 2026, 22:21killed at level 127 by Tempo'Mlodzieniec and Tempo'Erosik
16 Feb 2026, 21:56killed at level 128 by Tempo'Dens and Tempo'Povix
16 Feb 2026, 21:28killed at level 129 by Tempo'Juberek and Tempo'Ozzie Rax

Account characters
NameInformationStatus
1. Mateuusz (currently viewing)130 Elite KnightOnline
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