Re: [Evolution] Endless "Empty cache file" errors

[Paul Smith <paul mad-scientist net>]

On Wed, 2016-08-10 at 22:02 +0300, Robert Munteanu wrote:
> On Wed, Aug 10, 2016 at 9:54 PM, Adam Tauno Williams
> <awilliam whitemice org> wrote:
> > On Wed, 2016-08-10 at 11:40 -0700, fmouse wrote:
> > > I'm having the same problem with evolution 3.18.5.2. It happens when
> > > new mail comes in while evolution is open and running, and the new
> > > mail is inaccessible and trying to open it gives "Unable to retrieve
> > > message. Empty cache file: /home/.... etc." I researched the problem
> > > and a few days ago read that this is a known problem and to date
> > > there's no know fix,
> >
> > I've never seen such a message [speaking as a 24/7 Evolution user for
> > more than a decade].
>
> I see this continuously for one of my accounts - IMAPx with local
> filtering set up. The EWS account does not exhibit this problem, but
> there the filters are server-side.
>
> Here are just a couple of bugzilla entries related to this issue
>
>   https://bugzilla.gnome.org/show_bug.cgi?id=769011
>   https://bugzilla.gnome.org/show_bug.cgi?id=767564
>
> Running Evolution 3.20.4 FWIW.

I see this all the time as well.  It seems like more often than not I
have a blue bar at the top of my Evo mail display with an error like
this in it.  In fact there's one there right now.  I have >100G free on
my /home partition.

I have one IMAPX account for my ISP, and two GMail accounts.  I have my
accounts configured to use Bogofilter for junk, but NO OTHER FILTERS
are enabled on my work system; I have GMail do some filtering for me on
my work account.  On my home system I have a bunch of filters on my
IMAPX account.

I just click the "X" to close the error box and move on.  Sometimes I
even get an error in the preview section saying the message can't be
loaded and I have to select another message, then come back to the
first one and it displays.  This is probably a different problem
though.

I will confess that I am so busy and overworked that I haven't had the
energy to look into it at all, so I am not blaming anyone... just
saying this is not an unusual or rare problem (at least not in my
experience).  I feel embarrassed enough about my lack of effort here
that I was compelled to send this email :).

I'm using Evo 3.18.5.2 on my Ubuntu GNOME 16.04.1 system at work, and
see the same thing at home on my Ubuntu GNOME system where I've enabled
the GNOME preview PPA and I'm running Evo 3.20 of some vintage (I'm not
there so I can't tell you exactly).