I have an Infopath 2007 filler form. The ultimate goal is to use it as a template on a DoD Moss 2007 Sharepoint 2007 portal. Right now, we're running it from individual machines from the desktop. They save the form from email onto their desktop then open in design and save it back to the desktop overwriting it in order to break the initial development location. Out of six machines using it, three can sign the form, send it via email and upload it to the portal as a document. The other three machines cannot sign the form. A Microsoft error comes up (details lists a bunch of code and wants to know if we want to send a report to Microsoft) and shuts down the form. All machines are configured the same and signature controls are in place. The three machines that can't sign this form are able to sign other Infopath form templates from the portal. Any suggestions as to why the three machines won't sign this one form and others can? Thank you.