Thank you for your quick reply Russell.
It looks like something wrong with the project. I developed some biztalk projects(8 or 9) on this machine and never had this kind of issue before. Some one, who worked here before for me, started this project and left in the middle. I am trying to continue that project. I created new project and adding existing schemas and maps from his project. I guess one of those is corrupt.
Does it matter how many schemas and maps we can have it under one project/application? Will it slow down the run time? I dont like to creat different projects for schema and maps then reference them to main project. Then I need to undeploy and redeploy whenever I add new partners with new schema and maps or if i modify any. Please correct me if I am wrong.
Siva