Snapshot, Boot Fails - WNDR3700v3


I can build v18.06.0-rc1 just fine, and it boots on my WNDR3700v3. But the latest snapshot - it builds fine, and installs ... but the boot fails as follows (just hangs at the last line below). Anyone else seeing this?

CFE for WNDR4000 version: v1.0.6
Build Date: Wed May 18 17:25:10 CST 2011
Init Arena
Init Devs.
Boot partition size = 262144(0x40000)
Found an ST compatible serial flash with 128 64KB blocks; total size 8MB
et0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 2010.09.30.0
CPU type 0x19740: 480MHz
Tot mem: 65536 KBytes

Device eth0:  hwaddr 00-FF-FF-FF-FF-FF, ipaddr, mask
        gateway not set, nameserver not set
Checksum length overflow!
Loader:raw Filesys:raw Dev:flash0.os File: Options:(null)
Loading: .. 3832 bytes read
Entry at 0x80001000
Closing network.
Starting program at 0x80001000

Don't worry about the MAC or that it says WNDR4000 - the initial OpenWrt flash trashed this info - but the other build (18.06.0-rc1) is just fine with this.