freebsd stable - Aug 2015 - Error upgrading from 10.1-RELEASE to 10.2-RELEASE

Hi,
I am trying to update an amd64 system. With the command:
# freebsd-update upgrade -r 10.2-RELEASE
I receive the error:
....9510....19520....19530....19540....19550....19560....19570....19580....19590
done.
Applying patches... done.
Fetching 13651 files... 
1ae3b1c9f35d65ced43103718a87a4201f4e3434160114a0d355bbf5284da6aa has 
incorrect hash.

Note: running
# freebsd-update fetch
I receive this message:
The following files are affected by updates, but no changes have
been downloaded because the files have been modified locally:
/var/db/mergemaster.mtree

but I do not know if it is related to the error above.
Thanks
Maurizio

> On 24 Aug 2015, at 09:56 , Maurizio Vairani <maurizio.vairani at
cloverinformatica.it> wrote:
> 
> Hi,
> I am trying to update an amd64 system. With the command:
> # freebsd-update upgrade -r 10.2-RELEASE
> I receive the error:
>
....9510....19520....19530....19540....19550....19560....19570....19580....19590
done.
> Applying patches... done.
> Fetching 13651 files...
1ae3b1c9f35d65ced43103718a87a4201f4e3434160114a0d355bbf5284da6aa has incorrect
hash.
> 
> Note: running
> # freebsd-update fetch
> I receive this message:
> The following files are affected by updates, but no changes have
> been downloaded because the files have been modified locally:
> /var/db/mergemaster.mtree
> 
> but I do not know if it is related to the error above.
please see the thread ?freebsd-update to 10.2-RELEASE broken ?? on this mailing
list from this month;  I think there is no solution yet.

https://lists.freebsd.org/pipermail/freebsd-stable/2015-August/thread.html#83086


/bz