December 30, 2011, 01:22:45 pm
Ok, so to recap, you're saying that the birds disappear when you move the camera around in this particular scene, and that you are using Lumion 1 Free (SP2 Build 7 - 64-bit).
1) I can only help you if you update to Lumion 1 Free (SP2 Build 8 - 64-bit).
If you can reproduce the problem in this version of Lumion, please proceed to #2 below.
2) Please upload the Scene + Library files. The files are located in the Documents/Lumion/Scenes & Library folders. Bear in mind that there are 2 files per scene, and up to 4 files for each model that you have imported in the Library.
3) And lastly, please run "DXdiag" in the Windows Start menu -> Click on "Save All Information", and attach the dxdiag.txt document to your next post (Click on "+Additional Options").