There was a download of Autodesk MotionBuilder SP1 15.1 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The most frequent installation filename for the program is: LTU.exe. The most popular version among Autodesk MotionBuilder SP1 users is 15.1. The program is included in Photo & Graphics Tools. This free program was originally produced by Autodesk.
From the developer:
Service Pack 1 includes several important fixes for Autodesk MotionBuilder. MotionBuilder 2015 must be already installed on your computer prior to applying this service pack. Some of the bugs fixed in this service pack are; Animation Merge Bug, FBDelete on character crashes Mobu, and Audio amplitudes getting clipped at 6dB.
You may want to check out more software, such as Autodesk FBX SDK, Autodesk Inventor View SP1 or Autodesk AutoCAD Architecture SP1, which might be similar to Autodesk MotionBuilder SP1.
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