**System Information**
Archlinux, Sandy Bridge i5
**Blender Version**
Broken: v2.76
**Short description of error**
After saving and loading again, an assigned dupli-group disappears.
**Exact steps for others to reproduce the error**
1. unzip {F245367}
2. open c.blend
3. assign the dupli group "GroupA" to the selected empty.
4. save the file.
5. reload the file.
6. notice, that the dupli group "GroupA" is no longer assigned to the empty.
**Additional notes**
The problem only occurs in more complicated file linking structures. I couldn't reduce the problem to less than 3 files.
Here a.blend defines groups GroupA and GroupB. (GroupB might not be needed)
The file b.blend defines a group GroupC, which contains an instance of GroupA.
The problematic c.blend has an instance of GroupC, hence, it contains an indirect dependency on a.blend/GroupA. This might be an indication where to look for the problem :-).