I just updated SisuRender to version 0.6. I removed some unuseful code, fixed some bug at startup and some UI improvement. 
The two new usefull features are
-
3dsMax 2013 full compatibility
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MentalRay support
In fact now is possible to use it inside the latest release of Autodesk 3ds Max and also is possible to take advantage of all the built-in features of the “free” mentalRay render engine.