Acrobat 5 or 6 crashes when sending mail direct via MAPI

Hi together

We have problem to send PDF documents directly via MAPI from Acrobat Writer (Version 5.05 and 6 Prof.) through the Notes Client.

If a User clicks on send Email in Acrobat, Acrobat crashes and no new memo is opened. But when doing this action from Acrobat Reader, Explorer or Office (Word, Excel), everything is okay…

Has anyone solved this problem? Or any Ideas to share?