Hello everybody.

We are students and totally inexperienced about MS 5.5. So, speaking frankly we have some basic problems.

When we tried to run a simulation "to optimize the structure of Germanium cell" ( Predicting the thermodynamic properties of Germanium < CASTEP < Tutorial ), It shows the error: "server busy" ( screen shot attached below).  Then after sometime, it shows the error: "CASTEP calculation". ( screen shot attached below).We don't know what do these errors mean and how to fix them. We have tried several times.... but failed to run a simple simulation. So, please help us out.

Thanks,

Siam and Russell