Bug 1189258

Created attachment 851641 [details]
error output akonadi after start of kmail.

message of the program when trying to retrieve mail:
"unable to fetch item". 
Message when trying to download new mail: unable to memorize new item, unable to append item. 

I tried to erase the local akonadi folder as usual but that makes things worse. Akonadi does eventually not start for several times. 
Currently there are some "ghost" new messages indicated without seeing anything, some folders stay simply empty. 

akonadictl fsck does not give any error. Output starting kmail/kontact from console:
kontact
Icon theme "ubuntu-mono-dark" not found.
Icon theme "Mint-X" not found.
Icon theme "elementary" not found.
No text-to-speech plug-ins were found.
Cannot initialize model with data QJsonObject() . missing: QJsonValue(string, "urls")
"http://www.kde.org/dotkdeorg.rdf"
"https://www.linux.com/rss/feeds.php"
"http://planetkde.org/rss20.xml"
"http://pim.planetkde.org/rss20.xml"
"https://store.kde.org/content.rdf"
"http://planetkde.org/pt-br/rss20.xml"
"http://planet.kde-espana.org/atom.xml"
"https://fr.planetkde.org/rss20.xml"

As you see: no error, but folders are running wild refreshing without indicating anything. The mail in local mail is present and can be read when opening it one one one. 
I was able to retrieve an output of akonadi when started beforehand and then kontact / kmail afterwards. See attachment. The error quoted (besides others) is
Error code: "1292"