kontact/kmail keeps crashing

[cpradio]

Here is the backtrace of kontact

Application: Kontact (kontact), signal SIGABRT
0x00007fedc4130cf0 in nanosleep () from /lib/libc.so.6

Thread 1 (Thread 0x7fedca5cd750 (LWP 9184)):
[KCrash Handler]
#5 0x00007fedc40bbfb5 in raise () from /lib/libc.so.6
#6 0x00007fedc40bdbc3 in abort () from /lib/libc.so.6
#7 0x00007fedc4c09885 in qt_message_output () from /usr/lib/libQtCore.so.4
#8 0x00007fedc4c099cb in qFatal () from /usr/lib/libQtCore.so.4
#9 0x00007fedb1626638 in ?? () from /usr/lib/libkmailprivate.so.4
#10 0x00007fedb162ba70 in ?? () from /usr/lib/libkmailprivate.so.4
#11 0x00007fedb15ff529 in ?? () from /usr/lib/libkmailprivate.so.4
#12 0x00007fedb164fb53 in ?? () from /usr/lib/libkmailprivate.so.4
#13 0x00007fedb164f8b0 in ?? () from /usr/lib/libkmailprivate.so.4
#14 0x00007fedb16544e0 in ?? () from /usr/lib/libkmailprivate.so.4
#15 0x00007fedb16548bf in ?? () from /usr/lib/libkmailprivate.so.4
#16 0x00007fedb1738790 in KMKernel::init () from /usr/lib/libkmailprivate.so.4
#17 0x00007fedb1e70cba in ?? () from /usr/lib/kde4/kmailpart.so
#18 0x00007fedb1e717cf in KPluginFactory::createPartInstance<KMailPart> () from /usr/lib/kde4/kmailpart.so
#19 0x00007fedc54460cd in KPluginFactory::create () from /usr/lib/libkdecore.so.5
#20 0x00007fedc937cb89 in Kontact::Core::createPart () from /usr/lib/libkontactinterfaces.so.4
#21 0x00007fedb2af9ac0 in ?? () from /usr/lib/kde4/kontact_kmailplugin.so
#22 0x00007fedc937da99 in Kontact::Plugin::part () from /usr/lib/libkontactinterfaces.so.4
#23 0x00007fedc95a2e0b in Kontact::MainWindow::selectPlugin () from /usr/lib/libkontactprivate.so.4
#24 0x00007fedc959e42c in Kontact::MainWindow::loadSettings () from /usr/lib/libkontactprivate.so.4
#25 0x00007fedc95a6947 in Kontact::MainWindow::initObject () from /usr/lib/libkontactprivate.so.4
#26 0x00007fedc95a6e5a in Kontact::MainWindow::MainWindow () from /usr/lib/libkontactprivate.so.4
#27 0x000000000040372c in _start ()

Kmail backtrace

Application: KMail (kmail), signal SIGABRT
0x00007f2724193cf0 in nanosleep () from /lib/libc.so.6

Thread 1 (Thread 0x7f27297f2750 (LWP 9191)):
[KCrash Handler]
#5 0x00007f272411efb5 in raise () from /lib/libc.so.6
#6 0x00007f2724120bc3 in abort () from /lib/libc.so.6
#7 0x00007f2724c6c885 in qt_message_output () from /usr/lib/libQtCore.so.4
#8 0x00007f2724c6c9cb in qFatal () from /usr/lib/libQtCore.so.4
#9 0x00007f2728385638 in ?? () from /usr/lib/libkmailprivate.so.4
#10 0x00007f272838aa70 in ?? () from /usr/lib/libkmailprivate.so.4
#11 0x00007f272835e529 in ?? () from /usr/lib/libkmailprivate.so.4
#12 0x00007f27283aeb53 in ?? () from /usr/lib/libkmailprivate.so.4
#13 0x00007f27283ae8b0 in ?? () from /usr/lib/libkmailprivate.so.4
#14 0x00007f27283b34e0 in ?? () from /usr/lib/libkmailprivate.so.4
#15 0x00007f27283b38bf in ?? () from /usr/lib/libkmailprivate.so.4
#16 0x00007f2728497790 in KMKernel::init () from /usr/lib/libkmailprivate.so.4
#17 0x0000000000403053 in _start ()

I can't figure out what would have changed between last night and today since I did not run any updates/upgrades recently.

Does anyone have any ideas?

[cpradio]

Re: kontact/kmail keeps crashing

For anyone who may also experience this issue, do the following:
1) Close/Quit Kontact/Kmail, should be easy enough since it won't start
2) Rename your Mail folder to Mail.bkp
3) Start Kontact/Kmail, it starts fine now
4) Use the Import utility in File Menu to import your email folders back into Kontact/Kmail
5) Enjoy!