I replaced the following dlls on my machine Sqora32.dll,Sqoras32.dll,Sqresus.dll.This was required to use some new features of Oracle ODBC driver.But after the replacement I am not able to connect to the DB through the ODBC Data Source Administrator.The error i get is

Unable to connect
[ODBC Driver Manager] Driver's SQLAllocHandle on SQL_HANDLE_ENV failed.

The same connection works with the old dlls.And the new dlls work fine on other machines.Can some one please tell me what is wrong.