Field calc across join to table view

Why doesn't this work?! I'm going nuts!

addrTbl = r'Database Connections\Connection to blah.sde\blah.dbo.addr'
parcelTbl = r'Database Connections\Connection to blah.sde\blah.dbo.parcel'
arcpy.MakeTableView_management(parcelTbl, 'parcelTv')
arcpy.MakeFeatureLayer_management('default.gdb\\bm_parcels_calc', 'calcLyr')

arcpy.AddJoin_management('calcLyr', "PARCEL_PIN", 'parcelTv',"parcel_id","KEEP_ALL")

# works to here.

arcpy.CalculateField_management('calcLyr',"PARCEL_KEY", 'parcelTv.parcel_key')


Show me how to fix it and I'll buy you lunch at next years UC!