[Evolution] Keep getting "Empty cache file" errors.

[Milan Crha]

On Fri, 2018-06-01 at 08:30 -0600, Monish Rai wrote:
> Evolution Version: 3.22.6
> 
> I keep getting error messages like below:
> ...
> Execution of filter 'Patch' failed: Empty cache file: /home/...

	Hi,
there had been done (sadly several) changes around this in the past,
some after 3.22.x series. I suggest to update to the latest stable,
which is 3.28.x series. One workaround could be to limit concurrent
connections to 1 in account Properties, but it didn't always help (if I
recall correctly) and it has a downside of slower responses on user
actions which involve message download, folder update, saving changes
to the server and so on.
	Bye,
	Milan