Scenario: A simple SL4 OOB (installed with elevated privileges) application contains a WebBrowser control that points to a pdf hosted on the Internet. Clicking the email button causes a dialog to popup a question whether to send a copy or send a link, and then fails when selecting either option.
The only thing I've been able to find out about it is that it appears to be related to sendmail.api:
Unhandled exception at 0x2a80e8c6 (SendMail.api) in sllauncher.exe: 0xC0000005: Access violation reading location 0x00257000.
I'm also inquiring at the SL forums, and I fully expect that support for either company will tell me that it's the other's fault, especially considering the specific companies involved. But if anyone has any ideas about this, it would be hugely appreciated.