From e-onsoftware.com:

Update to Version 4.54 - Build 272334

The following is a list of bug fixes and improvements included in this update:

• Improved undo-redo strategy when moving camera.
• Improved memory management for large shadow maps.
• Improved handling of embedded alpha information.
• Improved compatibility with Vue d'Esprit 4 scenes.
• Improved 3DS format compatibility.
• Improved RenderCow performance with incorporated texture maps.
• Fixed resize and center imported objects option.
• Modified plant species create different plants depending on whether global breeze is enabled or not.
• Fixed the python SetMaterial function.
• Fixed a crash when rendering an animation with the G Buffer enabled.
• Fixed export of rocks (and of every non UV-ed mesh).
• Other minor interface fixes and improvements.

Now go get it!