ansys生成adams柔性体mnf文件中出现问题

大侠们，帮帮忙。我现在需要在ansys中对刚性构件进行柔性化，生成mnf文件然后导入adams中 。结果出不来，只有这样错误的提示：
”both structural and scalar master degrees of freedom(DOFs) are not permitted in a reduced analysis. Reduction of the mass and damping matrices is not valid for mixed DOFs. Use a full analysis or all structural master DOFs instead.
“
谢谢各位大侠啦。