Seems an error occurred during the last auto-update download of 3.0.3:
Maybe it would be a good idea to make sure the file is valid and try to download again later if not, and only send the email / allow upgrade when the file is valid.
[root@machine autoupdate]# cat lsws-3.0.3-std-i386-linux.tar.gz
<html><head><title>408 Request Timeout</title></head><body>
<p>This request takes too long to process, it is timed out by the server. If it should not be timed out, please contact administrator of this web site to increase 'Connection Timeout'.
- Guillaume Boudreau