**System Information**
WIndows 7 Home Premium 64 bit
Nvidia GEFORCE 610M - 1 GB
**Blender Version**
2.75
**Short description of error**
Just installed 2.75 version on WIN 7 x64 (usually I uninstall the previous version) Right now I have to associate the .blend files in the register editor with Blender otherwise blend files are not recognized. The blend preview into file manager (Explorer) is unavailable also...