load generator problem

[test11]

i am having controller on one pc and load generator on another pc.

load generator and controller on same domain.

i have developed load runner script for siebel 6 appication for load test.

when executing the script in controller with the load generator.
i am getting the error.

--- fail to load datafile.

the problem is not occured when executed the script with the local host

i am not getting this problem or error when executed the script developed for web application.