Very new user to FEA a little help needed

Hi all
well as the place was getting busier I have been looking around for an FEA package

I use linux and a linux based cad program so CAE was perfect for me

imported my step file ok , everything seemed ok , opened code astor followed the tutorial, saved the file
but when I went to run the saved comm file I get an error message saying (I think from memory ) machine time is limited to $

and the tuutorial doesnt say much other than go read

basically how do I get astk to run the newly created file
to process the file , so that I can load it into a post processor

Hope this makes sense

kind regards

Stephen

ps I ll try and take a screen shot of erro message next time