Sorry but my Lazarus Project the native crossplatform installer are in inactive development because i'm develop with a 14 members of a team a video game using UDK (Unreal Development Kit
1), maybe release an beta release.
I See various commercial installers with a incredible look thanks the Microsoft Drug (.NET), i want attract users or enterprises to use my project, many enterprises uses this technology, i decided develop another platform: .NET 4-3.5 and special IDE using Visual C++ 2010 Express, for another platforms the IDE are developed with Lazarus.
The installers and compiler be created with Lazarus/FPC, for the .NET platforms in Visual C++.
Another thing. in my country the .NET are most used in the enterprises.
1. Unreal Development Kit an free version of Unreal Engine :
http://www.udk.com