I am not able to install trial version of unity3D 4.0.1 on MAC OSX 10.5.8.
Same issue is posted here for unity3D 3.X.X version. (Problems installing on Mac OSX 10.5 (Leopard))
I am getting the installation error,
I have resolved the disk permission errors on my OSX. Still no luck.
Is there any compatibility issue with unity3D 4.0.1 with MAC OSX 10.5.8 ?
I can provide more information if required, about the OS.
Thanks in advance,