Comment 3 for bug 254137

I can reproduce this on an up to date Intrepid system as described in the original report.

version info
sudo apt-cache policy kdepim
kdepim:
  Installed: 4:4.1.1a-0ubuntu3
  Candidate: 4:4.1.1a-0ubuntu3
  Version table:
 *** 4:4.1.1a-0ubuntu3 0
        500 http://archive.ubuntu.com intrepid/main Packages
        100 /var/lib/dpkg/status

The terminal output from the crash is:
kontact
kontact(15641)/kmail KMailPart::KMailPart: InstanceName: "kontact"
kontact(15641)/kmail KMailPart::KMailPart: InstanceName: "kontact"
kontact(15641)/kmail KMail::lockOrDie: oldPid= 15482
kontact(15641)/kmail KMKernel::KMKernel:
kontact(15641)/kmail KMKernel::init: foldersPath (from config): "/home/ubuntu/.kde/share/apps/kmail/mail"
kontact(15641)/kmail KMKernel::identityManager:
kontact(15641)/kmail KMFilterMgr::KMFilterMgr: pPopFilter set
kontact(15641)/kmail KMailPart::guiActivateEvent:
kontact(15641)/kmail KMailPart::guiActivateEvent:
kontact(15641)/kmail KMailPart::guiActivateEvent:
kontact(15641)/kmail KMailPart::guiActivateEvent:
ubuntu@ubuntu:~$ kontact(15641)/kmail KMail::Vacation::Vacation: Vacation: found url " "" "
kontact(15641) KFileDialog::getSaveFileName: KFileDialog::getSaveFileName called with non-local start dir KUrl("vcalout.vcs")
kontact(15641) KFileItem::isDir: can't say -> false
ASSERT: "dt.isValid()" in file /build/buildd/kdepimlibs-4.1.1/kcal/vcalformat.cpp, line 1380
*** KMail got signal 6 (Crashing)
KCrash: Application 'kontact' crashing...