It’s a bit hard to take it, but reality being the OLE Notes attachment feature won’t work on GP 2013 Web Client for current technical reasons.
Read his post here: OLE Notes and Microsoft Dynamics GP 2013 Web Client
That brings to us a new feature called Document Attachment in Dynamics GP 2013. This can be used instead of OLE Notes. It looks just perfect for me to start using it instead of OLE. Not just because of the incompatibility with web client, but also due to it’s robust features.
More can be read in my next post and also Mariano’s.