PDDoc.Save doesn't save on 1st (and sometimes 2nd, 3rd, 4th etc...) try, but saves eventually

Question

Basically, I have a List of files to import to my C# program from a directory.
The C# program opens the files in Acrobat X, runs a plugin on them, and once the plug in has completed, it saves the files to another location.
AcroAppClass mApp = new AcroAppClass();
AcroAVDocClass avDoc = new AcroAVDocClass();
AcroPDDoc pdDoc = new AcroPDDoc();
if (avDoc.Open(fileToOpen, ""))
    pdDoc = (AcroPDDoc)avDoc.GetPDDoc();
    mApp.MenuItemExeute("My plugin name");
    bool saved = false;
    while(!saved)
        pdDoc.Save((short)(PDSaveFlags.PDSaveFull | PDSaveFlags.PDSaveCopy | PDSaveFlags.PDSaveLinearized | PDSaveFlags.PDSaveCollectGarbage), saveFileName);
        if(File.Exists(saveFileName)
           saved = true;
       else
           Console.WriteLine("Save failed");
The while(!saved) loop runs anywhere from 1 to x times. x has been has high as 10 times, or as low as 2, but never 1.
Why may this be?
I have full Administrative access to the drive, the files and the folders. The INTERESTING point is that eventually, after executing the PDDoc.Save command multiple times,
the file does end up saving, but this can't be correct operation, right?

Answer 1

BarlaeDC, the plugin edits the annotations in the document to update the links to URI annotations instead of standard Launch annotations.
Is there a way to get a report back from my plugin to my calling application so that it knows when the plugin is completed doing its job?
Bernd, application requirements by the client do not permit saving through the plugin. They want the C# code called through even another program, and need the C# to report back to it about the save.