parser errors from ideviceinfo with iOS 4.2.6

I'm trying to work the kinks out of a connection to a new iPhone 4 (iOS 4.2.6).

$ lsusb
Bus 001 Device 006: ID 05ac:129c Apple, Inc.
...

Simple ideviceinfo works fine:

$ ideviceinfo -s
ActivationPublicKey: ...=
BasebandChipId: 5243105
BasebandGoldCertId: 2
BasebandSerialNumber: IG+B5g==
BuildVersion: 8E200
DeviceClass: iPhone
DeviceName: iPhone
DevicePublicKey: ...=
DieID: 3170607768282189192
HardwareModel: N92AP
PartitionType: GUID_partition_scheme
ProductVersion: 4.2.6
ProductionSOC: true
ProtocolVersion: 2
UniqueChipID: ...
UniqueDeviceID: ...

But non-simple (complicated? ;) idevice info fails with a few parsing errors:

$ ideviceinfo
Entity: line 96: parser error : Char 0x0 out of allowed range
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag string line 96
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag dict line 10
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag dict line 4
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag plist line 3
                <string>s5l8930x
                                ^

Running with debug enabled gives:

$ ideviceinfo --debug
...
12:42:33 idevice.c:625 idevice_connection_enable_ssl(): GnuTLS handshake done...
12:42:33 idevice.c:636 idevice_connection_enable_ssl(): SSL mode enabled
12:42:33 property_list_service.c:142 internal_plist_send(): sending 292 bytes
12:42:33 idevice.c:507 internal_ssl_write(): pre-send length = 37
12:42:33 idevice.c:509 internal_ssl_write(): post-send sent 37 bytes
12:42:33 idevice.c:507 internal_ssl_write(): pre-send length = 325
12:42:33 idevice.c:509 internal_ssl_write(): post-send sent 325 bytes
12:42:33 property_list_service.c:147 internal_plist_send(): sent 292 bytes
12:42:33 property_list_service.c:148 internal_plist_send(): printing 292 bytes plist:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>Label</key>
        <string>ideviceinfo</string>
        <key>Request</key>
        <string>GetValue</string>
</dict>
</plist>
12:42:33 idevice.c:467 internal_ssl_read(): pre-read client wants 5 bytes
12:42:33 idevice.c:477 internal_ssl_read(): post-read we got 5 bytes
12:42:33 idevice.c:467 internal_ssl_read(): pre-read client wants 32 bytes
12:42:33 idevice.c:477 internal_ssl_read(): post-read we got 32 bytes
12:42:33 property_list_service.c:224 internal_plist_receive_timeout(): initial read=4
12:42:33 property_list_service.c:233 internal_plist_receive_timeout(): 6083 bytes following
12:42:33 idevice.c:467 internal_ssl_read(): pre-read client wants 5 bytes
12:42:33 idevice.c:477 internal_ssl_read(): post-read we got 5 bytes
12:42:33 idevice.c:467 internal_ssl_read(): pre-read client wants 6112 bytes
12:42:33 idevice.c:477 internal_ssl_read(): post-read we got 6112 bytes
12:42:33 property_list_service.c:242 internal_plist_receive_timeout(): received 6083 bytes
Entity: line 96: parser error : Char 0x0 out of allowed range
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag string line 96
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag dict line 10
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag dict line 4
                <string>s5l8930x
                                ^
Entity: line 96: parser error : Premature end of data in tag plist line 3
                <string>s5l8930x
12:42:33 lockdown.c:152 lockdownd_stop_session(): stopping session AE762072-FFB3-4EB2-8BA1-EA33D53D3FB4
...

I imagine this is just a minor tweak due to a newer iOS. I glanced through the libimobiledevice source, but haven't found the right place to start poking around yet.

Let me know if there's anything I can do to help fix/debug.