GTAIV Version 1.0.2 no longer needs a magic patch to function. All that is required is a patched version of filelist.pak which is available in this archive.

Step to upgrade to 1.0.2:
1. Undo any existing magic patches (Use the Recover tool if you used the Easy Way)
2. Install GTAIV Patch 1.0.2.
3. Backup the existing pc\data\filelist.pak
4. Replace pc\data\filelist.pak with the file in the archive.
5. Run the game and have fun!