invalid floating point operation during IPXC_Document.WriteToFile

[DISystemer]

I have a simple Delphi procedure to merge two PDF files.

procedure MergePDF;
var
PXCInst: IPXC_Inst;
document1, document2: IPXC_Document;
count1, count2: ULONG_T;
begin
PXCInst := CoPXC_Inst.Create;
PXCInst.Init(key);
document1 := PXCInst.OpenDocumentFromFile(PWideChar(filename1), nil, nil, 0, 0);
document2 := PXCInst.OpenDocumentFromFile(PWideChar(filename2), nil, nil, 0, 0);
document1.Pages.Get_Count(count1);
document2.Pages.Get_Count(count2);
document1.Pages.InsertPagesFromDoc(document2, count1, 0, count2, 0, nil);
document1.WriteToFile(PWideChar(destinationFilename), nil, 0);
document1.Close(0);
document2.Close(0);
PXCInst.Finalize;
end;

I get an "invalid floating point operation" error on the call to document1.WriteToFile, and this happens no matter which PDF files I use for testing - I have tried several different. Is this a bug in the SDK, or something wrong with the parameters I use?
I use PDF-XChange Core API SDK, version: 6.0.322.7. I have registered the DLLs with regsvr32, and imported the TLB to Delphi.

[Tracker Supp-Stefan]

Hello DISystemer,

I have passed your problem to our devs and they will take a look at this and reply as soon as possible!

Happy Holidays,
Stefan

[Sasha - Tracker Dev Team]

Hello DISystemer,

Please use forum search before asking - this will lower the duplicate topics count:
https://www.pdf-xchange.com/forum3 ... ng#p117445

Cheers,
Alex