The newest version of CatBot can be downloaded here. The file is called "CatBot_2_2_3313_23733.zip".
New in version 2.2:
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Creation of structural elements as "plate" or "tube" sections.
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Ability to set member thickness, in addition to diameter/plate depth.
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Proper application of structure self weight.
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Definition of end releases through a parameter using "f" and "x" (fixed and free) notation.
A template Catia file is also provided in the download.