This is where it fails:

000:<:1297: 28: Request(18): ChangeProperty mode=Replace(0x00) window=0x06400103 property=0x15c("_NET_WM_DESKTOP") type=0x6("CARDINAL") data=0x00000000;
000:<:1298:  4: Request(43): GetInputFocus 
000:>:1297:Error 3=Window: major=18, minor=0, bad=104857859

...but, this window had been destroyed already:

000:<:1028:  8: Request(4): DestroyWindow window=0x06400103
000:<:1029:  4: Request(43): GetInputFocus 
000:>:1029: Event DestroyNotify(17) event=0x06400103 window=0x06400103
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x19b(unrecognized atom) time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x1bd(unrecognized atom) time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x162("_NET_WM_STATE") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x17a("WM_STATE") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x159("_NET_FRAME_EXTENTS") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x15c("_NET_WM_DESKTOP") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x1a5(unrecognized atom) time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x23("WM_HINTS") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x1cb("XdndAware") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x1cd("_MOTIF_DRAG_RECEIVER_INFO") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x15d("_NET_WM_ICON") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x156("WM_WINDOW_ROLE") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x16d("_NET_WM_SYNC_REQUEST_COUNTER") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x16e("_NET_WM_WINDOW_TYPE") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x175("_NET_WM_USER_TIME_WINDOW") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x151("WM_CLIENT_LEADER") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x160("_NET_WM_PID") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x153("WM_LOCALE_NAME") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x24("WM_CLIENT_MACHINE") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x28("WM_NORMAL_HINTS") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x154("WM_PROTOCOLS") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x43("WM_CLASS") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x25("WM_ICON_NAME") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x15e("_NET_WM_ICON_NAME") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x27("WM_NAME") time=0x00c10b3c state=Deleted(0x01)
000:>:1029: Event PropertyNotify(28) window=0x06400103 atom=0x15f("_NET_WM_NAME") time=0x00c10b3c state=Deleted(0x01)