**System Information**
Windows 7 x64
**Blender Version**
Broken: (2.75a)
Worked: (optional)
**Short description of error**
Hello. There is one unpleasant moment in the new installation package "Blender 2.75" from the Microsoft Installer. It does not create associations on a .blend files. It is sad that in version 2.75a is not taken into account. You can at that time, until you create a new installation package, get the registry keys that are assigned to the file associations.