Hi all, I'm working on sustaining of an Outlook plug-in which uses MAPI to install custom form by calling MAPIOpenLocalFormContainer and then IMAPIFormContainer::InstallForm. One of my customers has this strange problem that, when running this code, MAPIOpenLocalFormContainer call fails with MAPI_E_CALL_FAILED error. Any ides what can cause this behaviour or how can I debug this problem further? Thanks, Zoran
