When switching from e.g. MES to Riks and having gravity activated, the RIKS analysis cannot be run, due to "body loads not allowed". There is no way to turn this thing off in Riks, so you have to switch back to MES, turn it off, then switch back to Riks again. It doesn't seem to be updating everything according to choosing a different analysis type. Also, even though Riks is chosen, the window for "advanced analysis parameters" is titled "Static stress with non-linear material models". I guess this is true, since Riks may be based on it, but it's still confusing.
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