open's Two frames on request for opening project on ProjectManagerEx

Hi,

When we try to open project programatically.
We have created a new project using
ProjectManagerImpl.getInstanceEx().newProject(newProjectFilePath,true,false);
We have created a new module for this new project.
We are opening this newly created project using
ProjectManagerEx.getInstanceEx().openProject(project);
The project gets opened in a new frame but an additional frame is
opened which has no project associated with it.

Can anyone point me out why this blank intellij frame with no
project associated with it is opened when we call
ProjectManagerEx.getInstanceEx().openProject(project);?

Thanks
Yuvraj