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Blender 2.61RC1 Released


The Blender Foundation has just released the first release candidate of Blender 2.61. Please download, test, and report any bugs that you may (or rather, will!) find. If everything goes according to plan, the final release should be next week!

New features include:

  • Motion tracking
  • Cycles Render Engine
  • Dynamic Paint
  • Ocean Simulation
  • Adobe After Effect add-on
  • 117 bugfixes!

More in-depth information on these features can be found in the work-in-progress 2.61 changelog, or you can jump straight to the download.

About the Author

Avatar image for Bart Veldhuizen
Bart Veldhuizen

I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the Blender Artists forum and I'm Head of Community at Sketchfab.


  1. woow! droool.. oh wait: "failed to create offscreen buffer" guess I can't show you that cycles works!

  2. Renders a black screen ... "Failed loading CUDA kernel [snip] kernel_sm_21.cubin"
    Pulled the file over from the 2.61 beta and it works fine.

    • ... that's the win32 build, and replacing the CUDA kernel with the kernel from 2.61 beta resolved the issue. Couldn't edit my first comment.

  3. I can't use this version's Cycles with my 8800GT GPU, The previous versions worked just fine for me. This one gives me an error message saying I need a card with SM 1.3 .

  4. I don't understand but I keep getting problems with the downloaded ziip or executable. I downloaded the Win32.exe and it told me there was a problem with the integrity of the package. Why am I having these problems?!

    • I finally got it working! I downloaded 2.61RC from work and then transferred it to my home PC via Wuala. I just don't understand why my ISP is mutilating the file downloads from the Blender website.

  5. I don't know about everyone else but blender seems pretty broken right now.  I getting several new problems and crashes that I didn't have 2 days ago.

  6. Having weird crashes when i play animations , any ideas? whenever i hit alt-a it just crashes for ages and occasionally stats working again and plays the 2nd half of the animation.
    Then it goes back to the start and freezes.

  7. installed the win32.exe and at least it started up and cycles seems to work. @RooL: they didn't change the version number and the splash screen it seems. But the give-away is that it includes cycles and the tracker. (Movieclip editor)

    • I would, but i checked and every build i use has the same cash. i've never crashed over the same thing over and over again before and im sure my pc can handle it, i hope to god its not some sort of software conflicting with blender or something, that kind of thing always takes a solid day or two to find a solution.

  8. Those on Linux: do you use repository for 2.6x version of Blender? If so, what do you use?
    I have updated Blender the hard way by downloading it and running it from the user directory. Blender is the only thing outside system updates and it would be nice to have it there.

  9. what build is this based off of? I have just downloaded rev 42516 and compiled yesterday. Very, Very Sweet!

    Thanks for all you guys do!

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