KWalletManager Crashes on Launch

Using 15.04 Kubuntu from the 17 April daily, updated and current.

Kwallet was initially silent after the install, with no prompts for passwords. However, in a subsequent new session, a Kwallet popup did request a password when I launched KMail. I cancelled the request. KMail requested an IMAP password.

This behavior persisted through several new sessions and reboots.

I launched KWalletManager. It reported the Wallet was closed. I tried to open the Wallet. KwalletManager crashed and would not close vai the 'Close' box on the window decoration. In addition, the window itself was overly small and could not be resized. Closing it via a right-click on the Task Manager brought up the "failing to respond" display.

That behavior has persisted: Moreover, KSysGuard shows kwalletd as a zombie process *after* reboots. KMail continues to request an IMAP password, although both IMAP and SMTP passwords are entered in the settings dialogue.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: kwalletmanager 4:14.12.3-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-14.14-generic 3.19.3
Uname: Linux 3.19.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
Date: Sat Apr 18 12:32:00 2015
InstallationDate: Installed on 2015-04-17 (0 days ago)
InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Beta amd64 (20150417)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: kwalletmanager
UpgradeStatus: No upgrade log present (probably fresh install)