[CS5] IDocFileHandler::SaveAs fails

Question

Hello to all of you!
I am starting to be desperate why the following code fails in CS5 runtime, release & debug, windows (yet). Actually the code  is part of SDKLayoutHelper, where it is used as example.
        InterfacePtr<IDocFileHandler> docFileHandler(Utils<IDocumentUtils>()->QueryDocFileHandler(documentRef));
        if (!docFileHandler)
            ELOG("Failed to get doc file handler");
            break;
        //Try to do SaveAs
        if(!docFileHandler->CanSaveAs(documentRef) )
            ELOG("Can't SaveAs the document!");
            break;
So - here my docfilehandler knows, that my document (it can be any document, new or opened) cannot be saved as. Of course, if I ignore the advice and try to persuade him, he can do it with
docFileHandler->SaveAs (documentRef, &inddFile, K2::kFullUI/*K2::kSuppressUI*/, kFalse);
It is not a success at all.
I am porting from CS2/CS3/CS4 to CS5 and I did not have so much fun for a long time. Does anyone have similar experience?
Thanks a lot for sharing!

Answer 1

I don't know why you can't. I am using on desktop InDesign and InDesign Server.
I am using as following,
UIDRef docUIDRef = ::GetUIDRef(document);
InterfacePtr<IDocumentUtils> docUtils(GetExecutionContextSession(), IID_IDOCUMENTUTILS);
InterfacePtr<IDocFileHandler> docFileHandler(docUtils->QueryDocFileHandler(docUIDRef));
if (docFileHandler->CanSaveAs(docUIDRef)) {
docFileHandler->SaveAs(docUIDRef, &newSysFile, kSuppressUI);