SnowCover4 version 1.2a
CallBar version 2.2-4

When music is playing and phone is locked, an incoming call instantly sends my phone into Safe Mode.

I tried to "Contact the Author" through Cydia, but I received an e-mail saying the message was undeliverable

No choice but to uninstall SC4 until there is a fix... such a shame!!! I'm going to miss it ;-(