[Dovecot] file ostream-file.c: assertion failed with v1.0-test38

Hello,

I've some troubles logging in after upgrading to -test38. The error in the logs says:

Sep 4 02:34:38 hostname dovecot: imap-login: Login: username [123.123.123.123] Sep 4 02:34:48 hostname dovecot: IMAP(username): file ostream-file.c: line 105 (update_buffer): assertion failed: (size <= used) Sep 4 02:34:48 hostname dovecot: child 28966 (imap) returned error 1

Regards,

wouter