Cant use gdb

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Hello guys , i have a tiny problem , when i try to use gdb  i get undefined command "gdb" try "help".

My game file is in  /usr/home/game/solitude/   and the game.core that i want to debug is in /usr/home/game/channels/channel1/core1/game.core

and i run this command  

gdb /usr/home/game/solitude usr/home/game/cahnnels/channel1/core1/game.core 

it says wrong version in compilation unit header (is 4,should be 2) 

 

what am i doing wrong?

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UP , now it says no symbol table in ??

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