Some time ago (a few months) kdepim was working fine with the using our local egroupware server. No idea what happened then, but the egroupware resource didn't work anymore (I dond't remember if it was the same issue). At least after re-setting up the resource I know always get:

eGroupware: Unable to retrieve items: There was problem with the request. 
The file or folder <server> does not exist. (0).

As pop-up message. Already this is sufficiently annoying, as it re-appears every n minutes. I might be a bit old fashioned, but if at all I only would want to see this message a single time. And definitely not at as pop-up, but only directly at configuration time (btw, configuration went fine). Further message should go into a log file file, e.g. .xsession-errors.
And in my opinion, this message is entirely useless, maybe with exception of the one who the code, as it does not help to figure out what is going on and it even does not help to locate the sources where the issue happens.  So I already grepped through akonadi, kdepim and kdepim-runtime source packages, but I don't find any reference to the error message I get in these sources.  It already would help if it would print __FILE__:__LINE__: error_msg in error logs....



Reproducible: Always

Steps to Reproduce:
1. Add fraunhofer itwm egroupware resource (success)
2. Wait until it tries to refresh the resources