Hello,

I use DocumentManager to the mass from all configurations:

2017 SOLIDWORKS API Help - GetMassProperties Method (ISwDMConfiguration)

Sometimes I get a swDmMassPropErrorNoData-error for a configuration. When I open the file in SWX, change to this configuration and use swModel.Extension.GetMassProperties, I get the mass.

Does anyone can guess a reason, why DM is sometimes not working?

Thanks,

Samuel