Comment # 3 on bug 1166499 from Stakanov Schufter

(In reply to Wolfgang Bauer from comment #2)
> PS: there was an update to libgcrypt 3 days ago.
> Does it maybe help if you reinstall the older version?
> 
> E.g. Open YaST->Software Management, search for the package (libgcrypt20 in
> this case), and click on the "Versions" tab to install the previous version.

Yes, this does restore functionality. 
However, there is a problem with this provider as it seems. I have the same
also with 15.2 beta (but the sending works and the reception fails). 
I suppose 15.2 beta and current 15.1 share the same library?