Acer Cloud addin shows saveas dialog in MS word 2010

In my word vsto application, I'm creating new word document and saving it by saveas method, it works fine, but it shows saveas dialog box during saveas method on acer M5-581T-6405 machine. On this machine another Acer Cloud addin is install except my addin, when I checked this addin in COM addin list, then it shows saveas dialog, otherwise it does not show the dialog.

I have set following conditions for word.application object:

 wordapp.Visible = false;  // creating in background
 wordapp.Options.SavePropertiesPrompt = false;
 wordapp.Options.SaveNormalPrompt = false;

 wordapp.DisplayAlerts = Microsoft.Office.Interop.Word.WdAlertLevel.wdAlertsNone;            

 doc = (Document)wordapp.Documents.Add(ref missing, ref missing, ref missing, ref visible);    //visible=true

doc.SaveAs(ref file, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);        

but it's not working for that machine(show saveas dialog, when "Acer Cloud" addin is enabled). I am using word 2007/2010.

Do your acer cloud enable all display alerts for ms word?

Please suggest me how can I solve this issue?

Thanks,

Saurabh