Error: Render buffer had incorrect width

[moraton]

Does anybody know what is this error? I'm running Indigo 3.2.8 on a i-7 core 2600 3,4 GHz and 4 gb ram, windows 7 64-bit, all scenes (also simplest) got this error. Only reducing resolution at about 800x600 I can render my scene but this is a low resolution for a render.
Thanks,

Daniele

[CTZn]

Unlicensed copies have a resolution limit of 0.7 megapixels. The highest 4/3 resolution available in demo mode is 960x720 (691 200 pixels).

I'm under the same restriction since 3.0 is out

[moraton]

Thank you for your help!