Collect prebuilt files.

petalinux-package --prebuilt --prebuilt --fpga=../tutorial_custom_zed.sdk/SDK/SDK_Export/hw_platform_0/design_1_wrapper.bit -a ../tutorial_custom_zed.sdk/SDK/SDK_Export/fsbl_0/Release/fsbl_0.elf:images/zynq_fsbl.elf

And you may do some dirty work, cd pre-built/linux/implementation/  && ln -s design_1_wrapper.bit download.bit .
PetaLinux 2013.10 need download.bit as FPGA bitstream file.