DWG file not shows all the objects

Hi,

I am having problem with handling of DWG file with AECOsim. When I open a DWG file from AECOsim, it does not show all the objects, some of them are missing. But when the same file is opened with another machine it shows all the objects. I suspect there is some kind of settings not quite right on my machine. Could you find out what could be solution for this kind of problem. I am using AECOsim Building Designer (SS6).