tibia error - debug assertion

hola amigos quisiera saber por que tengo este problema

cuando kiero entrar a mi ot server me da este bug

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tibia error - debug assertion
the tibia client encountered a critical error and had to be stopped

a detailed error report has been written to the error files which
you are asked to submit at your next loging.

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por favor ayudenme se los agradesere mucho

IMAGENES:
https://2img.net/r/ihimg/photo/my-images/153/errorxw.jpg/
https://2img.net/r/ihimg/photo/my-images/863/tibiaerror.jpg/
https://2img.net/r/ihimg/photo/my-images/807/tibiaerror1.jpg/

tengo este pos en: http://www.blacktibia.org/t5734-problema-con-mi-ot-server86