Address of packet size function not found

[backatone]

I play kro ( Private server )

i try to play a bot
i need receieve pack
so i extract to packet of kro.exe file
but this error block me
it's packet extract error ( Address of packet size function not found )

Ready to disassemble
Press Start...
Disassembling... Please wait
Disassembled for 2.38 second(s)
1194261 total lines...
Extracting Packets...
Using automatic method #1
Using automatic method #2
Using automatic method #3
Address of packet size function not found.

please solve this problem