Opening old projects with new versions

currently i’m using 2.5 version for my project, and i wanted to look at this example:

Perhaps it was designed for unity 2.0 and it’s impossible to import working scene to 2.5

Could you please tell me where i can find old versions of Unity or how to import old project without loosing the scene.

Thanks

That project should work just fine in 2.5.

i’ve imported it, but scene is empty, so i can’t even see to what elements like scripts or particle renderers are attached.

If it’s possible, could you resave Lightning scene in 2.5 and upload it here?

since 2.6 stuff is no longer backward compatible.

so stuff done in 2.6 will not work in 2.5, stuff done in 3.x will not work in 2.x

dreamora, than in what version that project was done?
Perhaps i need a newer version of the program?

The link you posted is the 3.0 version… try this one: http://unity3d.com/support/old-resources/example-projects/procedural-examples

damn, thanks!
didn’t see that there are two versions of the project already