Updates after 2.0.5(old) doesn't work for me, As said Options

[Joy]

Hello everybody, and Cheeseh
Thank you, Cheeseh, for making rcbots even when you are at your hard time.

Finally I got one of its update working on my TF2, that is the old 2.0.5

Here's my problem:
I as usual, firstly installed the latest version of rcbot2 for tf2 (2.0.57) and found it not working.
(I read the instructions, please don't ask me the directories I am hell clear about them)

The HPB_Bot2.dll could be loaded but immediately after I type in "rcbot addbot" the game exits with "stopped working".

For this issue I tried all other updates and only found the old 2.0.5 working.

Furthermore, it seems the dll has problem, or maybe my version of TF2 has problem.
The old 2.0.5 dll can work properly with the new 2.0.57 files other than HPB_Bot2.dll

Does this mean my version of TF2 is too old ?
Will using the old dll affect the intelligence of bots ? (That's what I concern about)

Looking forward to your replies.
Thanks in advance.