Toolbox workaround

I needed to add an internal P/N to a screw.  I RMB on a TB part and picked edit toolbox definition and got the below error, I then RMB and picked component properties and changed the config.  Redid the RMB on a TB part and picked edit toolbox definition, this time it worked and I was able to finish.  Anyone know what went wrong?

SolidworksToolbox