BillChesshire

K Bird 1 in his post above  has various PDF formats to choose from.  When I select the default Chief Arch PDF it sends it to my operating system   (the path of least resistance- how it has always worked  .  My options currently consist of Chief and my 2 currently installed printers  

See attached screen shot    I uploaded a free Adobe , How to install that as an optional PDF  ???  Looked around but can find a method. 

BTW I believe the blue button in the lower right hand corner sends it to whatever is selected in the upper panel - no customization available there.  

Thanks to you all for helping

Thank you for your input 

1. My Mac is over 5 years old - and. the same files sent to 3rd party printers - no recent problems - but I am reaching out this week to further check.  

2.   Chopsaw's comment from Sunday - I have been using the "Chief Architect Save as PDF"   then when it is saved - it is to Apple Preview - this is the current default from Chief 

I am attempting different paths - including sending direct to printer   and choosing the transparent Background option  

Attempt to fix 

Exported Layout as PDF - placed on desk top

Opened as an Adobe PDF  sent to HP 7740 to print

Problem Persists 

To print directly to Printer  - Layout formatted to size of paper used 

    Create Layout  - in Export Menu ???  will try picture options 

Good question, I don't think I am printing directly   my SOP so far has been

I built a Layout  then  File/ then scrolled down to "Print"  / scroll down to "Print" again 

A PDF file is generated which  I Save ( rename with the page size in title)  

My Apple generates a "preview" of the PDF  hit file / print / OK 

So opened that same file using Adobe - problem persisted 

Going to try some different steps - save to  PDF   try to avoid the Apple interface.......

Printing PDF's , elevations,  cross sections have a solid black background.  Perspective camera views also have a solid black back ground and a black grid over the picture.  I am using Apple  , X 13 and a new HP 7740 printer ( my faithful 12 year old Brother MFC6490CW is not the culprit as I thought ) 

Reading articles on this subject in the Forum - the cause is linked to transparent backgrounds?  using Apples' preview app? 

The print shops I have sent PDF's to - not a problem -

As suggested I upload Adobe app and printed though it. -- same issues .   Any suggestions how to use a white background instead of transparent ?? 

I have started a a case with Chief Tech support - will share their response