Good afternoon all,

I need to ask a question about the bad argument "Stirngp nil".

I come up with this each time am trying to place a remote control valve just today, however I placed one few days ago and everything went fine.

I went through the documentation in regard with this error, and 

1- I did clean up the advised drawing along side with the other xrefs,

2- I did deleted the equipment and install new one, 

3- I did try to place the equipment in a blank drawing

but still getting the same error

Is there anything else I can do? or is it a bug?

Thanks in advance

Nibal