Problems with showing 3D-plots

Hi there I know there has been post about this, but here we go again: I'm in a math class, where some (mine inclusive) mathcad installations wont show 3D-plots, as described in http://www.ptc.com/forums/viewtopic.php?t=7008 when inserting a 3D-scatter plot, a blank Square appears. We have tried to isolate the problem and this is our results: Lenovo R61i w/ win7 x64 ultimate - M020 (14.0.2.5) Error Lenovo T400s w/ win7 x64 pro - M020 (14.0.2.5): Error Lenovo w500 w/ win7 x32 ultimate: Error (older version) HP w/ win7 x32 home: NO ERROR (older version, same as below Lenovo T60 w/ win xp pro sp3 - 14.0.1.286 M011: No error Mac running xp via vmware: no error IBM t43 win7 x32 - 14.0.0.163 - error T61p vista mathcad v 13 - no error -------------- So as you can see it seems like the problem is Lenovo Laptops with windows 7 and MC14, which makes no sense? Do you have any ideas on what the issue could be please let us know! (I will try to update this post with more information on the machines)