There is the problem. Here is a partial list of things that will never import/export in 'other' 3D applications without some sort of 'assistance' usually requiring paying more money or owning the originating application: 1. LWS or LWO 6+ 2. MAX 3. C4D 6+ 4. DWG Add to that any other proprietary/binary format. For LightWave and Cinema 4D, the numbers represent the version at which a basically non-proprietary or open-text format was changed to the other. Yes, some companies pay heavy licensing fees to support certain formats (such as DWG or Poser files in Vue). It really depends on the company which owns the format, the company that might license the format, the cost, and cost-to-benefit ratio. If the company doesn't see spending $25000/yr to support DWG (and that, my friends, is the Open format's cost for that type of licensing - I don't even want to know what AutoDesk asks) as a benefit then you will not see support.

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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