I hope this helps someone. I have solved my problem - a couple of hours taken however!
The following command will create PDFs on both platforms (as shown by the most recent language reference) These are readable and printable SET PRINT OPTION(Destination option;2;$longDocName) However I only get valid PDFs for EMAIL using the older code for MAC SET PRINT OPTION(Destination option;3;$longDocName) I feel SO in need of a good set of printed reference documents for use when things are changing quite rapidly and now that V18 has come out v17v6 docs are not available on line. I suspect this is a version difference. Kind regards and thank you for all the suggestions Steve On 03/04/2020, 18:25, "4D_Tech on behalf of UKVetDerm via 4D_Tech" <[email protected] on behalf of [email protected]> wrote: The files won't open on Mac OS or Windows and the applications tried include Preview, PDF Expert and Adobe Acrobat The header information looks good to me %!PS-Adobe-3.0 %APL_DSC_Encoding: UTF8 %APLProducer: (Version 10.14.6 (Build 18G4032) Quartz PS Context) Thanks Steve On 03/04/2020, 18:15, "4D_Tech on behalf of JBellos via 4D_Tech" <[email protected] on behalf of [email protected]> wrote: More along the lines of Tim - we had a problem recently where there was some 'stuff' being inserted into the header of the PDF. Mac Preview seems to do a great job at ignoring this, but most Windows based PDF readers don't (including Acrobat), probably for security reasons. If you save the received PDF to disk and examine it in some kind of raw text editor, do you see garbage before the PDF or does it look OK? -- Sent from: http://4d.1045681.n5.nabble.com/4D-Tech-f1376241.html ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] ********************************************************************** ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] ********************************************************************** ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************

