Mesh Face Error When Opening 2.6 Files in 2.49b

well I don’t know what happen I accidentally saved my work in 2.6 and when I open the blend file in older versions it loads everything, just no mesh has any faces just wire frame please help. Is there a setting in 2.6 to fix this or will i have to go and reapply all the faces?
Has anyone found this problem as well?

When you save your blend file enable the ‘Legacy Mesh Format’ tickbox in the blender file browser window.

sorry haven’t checked back but thanks it work