Mail shuts down when adding an attachment

Afteer upgrading to Maveric I do have the following issue. When I open Mail and write an E-Mail and then add an attachment (no matter what file type). Mail shuts immediately down. When opening Mail again, luckily the written E-Mail is still there, but still no attachment is attached. Currently I do send plenty of dropbox links instead as this can be added without any problems. Is there a way to fix this issue?

At least I know see the file preview in Mail again. Which wasn't possible for years with lion :-)