Unable to send mail when Outlook is open
I am a service provider and one of my clients is having trouble with sending email from Filemaker Pro. When Outlook is open and she tries to send email from FM, FM displays an "Unknown Error: -1" message. But, email sending works fine with Outlook closed. It's very bizarre and the Windows logs don't show anything obvious.
I was wondering if any of you have run into this before. She also uses the program Artbase in conjunction with Filemaker.