In my version (AC19 INT) I get this problem with "Unequal Angles Beam 19" and "Unequal Angles Column 19" objects. If I go to the Properties and Descriptions page of their Beam Settings panel in the Object Settings Dialog, all values are zero.
However, in case of all the other objects I checked in that directory, the values are filled in properly.
In any case, this is something I will report to GRAPHISOFT.
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