Without seeing the actual part file I have no way of knowing what the problem might be. I suspect that the you're attempting to define a thread using a text string that does NOT match any entries in the threaded hole data file.
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA Siemens PLM: UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.
OK, I see the problem. The fields in your spreadsheet, which represent 'string' Expressions, must be written with double-quotes, as in "#1-64 UNJC" and "Inch UNJC".
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA Siemens PLM: UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.