Uncaught exception when saving to PDF via script

Rick, some years ago Jang posted a messaage concerning FA_errno:

• FA_errno is read only, hence can not be set to 0 before a critical action which may give an error code.
• Use a script such ass InitiateFA_erro () see hereafter.

...
findParams = GetFindParameters (2, null); // finding any variable, no wrap
InitFA_errno (); // reset - it is write protected
oTR = oDoc.Find(oTR.beg, findParams); // and do an initial find to get started.
while(FA_errno === Constants.FE_Success) {
  ...
  InitFA_errno ();
}

KLD_Z.InitFA_errno = function () { //====================================
/*            Reset FA_errno
Arguments     oDoc            Current document
              asNames         Array of xy-names
Returns       Function value is Modified constant
Called by     CollectVarsInDoc
Calling       -
Comment       FA_errno is write protected and hence can not be set to 0 programmatically
Usage         ...
              findParams = GetFindParameters (2, null);     // finding any variable, no wrap
              InitFA_errno ();                              // reset - it is write protected
              oTR = oDoc.Find(oTR.beg, findParams);         // and do an initial find to get started.
              while(FA_errno === Constants.FE_Success) {
                ...
Reference     https://forums.adobe.com/thread/962910
History       2020-12-29
*/
  app.GetNamedMenu("!MakerMainMenu");             //If this fails, you've got a bigger problem
  return;
} //--- end InitFA_errno ------------------------------------------

Hi Rick,

with some litte improvements it works for me.

You also have to check, if all documents of the book can be opened.

I've just run it the third time.

#target framemaker;
#strict on
 "use strict";

var book, name;

book = app.ActiveBook;
name = book.Name.replace (/[^\.]+$/, "pdf");

    saveBookAsPdf (book, name);
 
function saveBookAsPdf (book, name) {	
    
    var params, returnParams, i;
    
    params = GetSaveDefaultParams ();
    returnParams = new PropVals ();
    
    i = GetPropIndex (params, Constants.FS_FileType);
    params[i].propVal.ival = Constants.FV_SaveFmtPdf;
    
	i = GetPropIndex (params, Constants.FS_PDFUseDistiller);
    params[i].propVal.ival = 0;
    
    i = GetPropIndex(params, Constants.FS_FileIsInUse);  
    params[i].propVal.ival = Constants.FV_ResetLockAndContinue;     

    book.PDFJobOption = "Standard";// NEW
    
   // FA_errno = 0;     // this is readonly and throws an error if #strict is on
    book.Save (name, params, returnParams);

    
	if (FA_errno !== 0) {
		PrintSaveStatus (returnParams);
	}
    return FA_errno;
}