I am trying to make a tabwrite2~ external by copying the tabwrite~ section of d_array.c into its own tabwrite2~.c file. 

The external compiles fine without errors, but the object is unable to be created in a pd patch. 

I checked my build process with a simple hello world external, and also another external i had made earlier and they both work fine.  So it seems there is some issue with using the d_array tabwrite~ code directly in its own file.  

Any ideas?  

thanks, Matt