Kernel Panics (x 2) using Disk Warrior 4.4 on latest Lion build

After updating to the latest build (11D50 > 10.7.3), I decided to make a new clone from scratch on one of my external partitions. Erased disk with Disk Utility > made clone using Super Duper (I use CCC on my other clone). Tested clone by booting into it - worked. Booted back into internal and launched Disk Warrior; graph showed directory 37% out of whack. So I hit rebuild. Within 60 seconds or so, first kernel panic. Shut down. Rebooted and everything appeared fine. Sent the kp report to Apple. Decided to try it again: within 60 seconds, the second kernel panic.

KP log is below if anyone can make some sense of it (also sent that to Alsoft this morning):

Interval Since Last Panic Report: -8 sec
Panics Since Last Report: 1
Anonymous UUID: C7B05263-F497-421C-AD7C-B0EC862C2AEF

Fri Feb 3 22:27:12 2012
panic(cpu 3 caller 0xffffff80002c266d): Kernel trap at 0xffffff80002af406, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0xffffff813b63c000, CR3: 0x00000000216a7035, CR4: 0x00000000000206e0 RAX: 0x0000000000016fe0, RBX: 0xffffff813b631020, RCX: 0x0000000000000003, RDX: 0x000000000000aff8 RSP: 0xffffff81620dbcc8, RBP: 0xffffff81620dbcf0, RSI: 0xffffff813b63c000, RDI: 0xffffff813b652fe0
R8: 0x0000000000000000, R9: 0xffffff80008bf5e0, R10: 0xfffffe8001a96360, R11: 0x000000000017bb00 R12: 0xffffff80008df780, R13: 0xffffff802cca2b00, R14: 0x000000000000aff8, R15: 0xffffff8030b369c0
RFL: 0x0000000000010216, RIP: 0xffffff80002af406, CS: 0x0000000000000008, SS: 0x0000000000000010 CR2: 0xffffff813b63c000, Error code: 0x0000000000000000, Faulting CPU: 0x3

Backtrace (CPU 3), Frame : Return Address 0xffffff81620db980 : 0xffffff8000220702 0xffffff81620dba00 : 0xffffff80002c266d 0xffffff81620dbba0 : 0xffffff80002d7a1d 0xffffff81620dbbc0 : 0xffffff80002af406 0xffffff81620dbcf0 : 0xffffff80005e3909 0xffffff81620dbd20 : 0xffffff7f80793da4 0xffffff81620dbda0 : 0xffffff8000654830 0xffffff81620dbdf0 : 0xffffff800029f20d 0xffffff81620dbe20 : 0xffffff8000223006 0xffffff81620dbe50 : 0xffffff8000214829 0xffffff81620dbeb0 : 0xffffff800021bb58 0xffffff81620dbf10 : 0xffffff80002aedb0 0xffffff81620dbfb0 : 0xffffff80002d801e

Kernel Extensions in backtrace: com.alsoft.Preview(4.4)[B016E8B4-FE8A-B791-49C8-6FF01DF285E2]@0xffffff7f8079300 0->0xffffff7f80799fff

dependency: com.apple.iokit.IOStorageFamily(1.7)[E0606FD9-7CC1-3E36-BC0A-E0768FF988E4]@0xff ffff7f8076e000 BSD process name corresponding to current thread: DiskWarrior

Mac OS version: 11D50

Kernel version:
Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64 Kernel UUID: 7B6546C7-70E8-3ED8-A6C3-C927E4D3D0D6
System model name: iMac11,3 (Mac-F2238BAE)

System uptime in nanoseconds: 1024244228248
last loaded kext at 1024201863243: com.apple.iokit.IOAVBFamily

1.0.0d22 (addr 0xffffff7f807a4000, size 36864)
last unloaded kext at 1007434208889: com.apple.iokit.IOAVBFamily

1.0.0d22 (addr 0xffffff7f80793000, size 36864) loaded kexts:

com.alsoft.Preview 4.4
com.apple.driver.AppleHWSensor 1.9.4d0 com.apple.driver.AppleMikeyHIDDriver 122 com.apple.driver.AppleUpstreamUserClient 3.5.9 com.apple.driver.AppleMCCSControl 1.0.26 com.apple.driver.AppleMikeyDriver 2.1.7f9 com.apple.driver.AudioAUUC 1.59
com.apple.driver.AppleHDA 2.1.7f9
com.apple.driver.AGPM 100.12.42 com.apple.kext.ATIFramebuffer 7.1.8 com.apple.iokit.IOUserEthernet 1.0.0d1 com.apple.Dont_Steal_Mac_OS_X 7.0.0 com.apple.driver.AudioIPCDriver 1.2.2 com.apple.driver.ACPI_SMC_PlatformPlugin 4.7.5d4 com.apple.driver.AppleLPC 1.5.3 com.apple.nke.webcontentfilter 3.0 com.apple.driver.AppleBacklight 170.1.9 com.apple.ATIRadeonX3000 7.1.8
com.apple.filesystems.autofs 3.0 com.apple.driver.AppleUSBCardReader 3.0.1 com.apple.driver.AppleIRController 312 com.apple.driver.Oxford_Semi 3.0.1 com.apple.AppleFSCompression.AppleFSCompressionTypeDataless

1.0.0d1 com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1 com.apple.BootCache 33
com.apple.iokit.SCSITaskUserClient 3.0.3 com.apple.iokit.IOAHCIBlockStorage 2.0.1 com.apple.driver.AppleFWOHCI 4.8.9
com.apple.driver.AppleUSBHub 4.5.0 com.apple.driver.AirPort.Atheros40 502.60.2 com.apple.iokit.AppleBCM5701Ethernet 3.0.8b2 com.apple.driver.AppleEFINVRAM 1.5.0 com.apple.driver.AppleAHCIPort 2.2.0 com.apple.driver.AppleUSBEHCI 4.5.8 com.apple.driver.AppleACPIButtons 1.4

com.apple.driver.AppleRTC 1.4
com.apple.driver.AppleHPET 1.6 com.apple.driver.AppleSMBIOS 1.7
com.apple.driver.AppleACPIEC 1.4
com.apple.driver.AppleAPIC 1.5 com.apple.driver.AppleIntelCPUPowerManagementClient 167.3.0 com.apple.nke.applicationfirewall 3.2.30 com.apple.security.quarantine 1.1 com.apple.driver.AppleIntelCPUPowerManagement 167.3.0 com.apple.iokit.IOAVBFamily 1.0.0d22 com.apple.driver.AppleBluetoothHIDKeyboard 152.3 com.apple.driver.AppleHIDKeyboard 152.3 com.apple.driver.IOBluetoothHIDDriver 4.0.3f12 com.apple.driver.DspFuncLib 2.1.7f9 com.apple.driver.AppleSMBusController 1.0.10d0 com.apple.driver.AppleSMBusPCI 1.0.10d0 com.apple.iokit.IOFireWireIP 2.2.4 com.apple.driver.AppleUSBAudio 2.8.2f5 com.apple.iokit.IOSurface 80.0 com.apple.driver.AppleHDAController 2.1.7f9 com.apple.iokit.IOHDAFamily 2.1.7f9 com.apple.iokit.IOBluetoothSerialManager 4.0.3f12 com.apple.iokit.IOSerialFamily 10.0.5 com.apple.iokit.IOAudioFamily 1.8.6fc6 com.apple.kext.OSvKernDSPLib 1.3 com.apple.driver.ApplePolicyControl 3.0.16 com.apple.driver.AppleSMC 3.1.1d8 com.apple.driver.IOPlatformPluginFamily 4

Model: iMac11,3, BootROM IM112.0057.B00, 2 processors, Intel Core i3, 3.2 GHz, 12 GB, SMC 1.59f2
Graphics: ATI Radeon HD 5670, ATI Radeon HD 5670, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020 Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020 Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x857F, 0x483634353155363446393333334700000000 Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1333 MHz, 0x857F, 0x483634353155363446393333334700000000 AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.61.4-P2P
Bluetooth: Version 4.0.3f12, 2 service, 18 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: hub_device, 0x050d (Belkin Corporation), 0x0237, 0xfd140000 / 5
USB Device: iMic USB audio system, 0x077d, 0x07af, 0xfd142000 / 8
USB Device: CTH-460, 0x056a (WACOM Co., Ltd.), 0x00d1, 0xfd145000 / 7
USB Device: Back-UPS ES 550 FW:843.K2 .D USB FW:K2, 0x051d (American Power Conversion), 0x0002, 0xfd141000 / 6 USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0xfd110000 / 4
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: MacALLY USB One Button Mouse, 0x0618 (Chia Shin Technology Corp.), 0x0301, 0xfa130000 / 5
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfa120000 / 4
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 3
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0xfa111000 / 7
FireWire Device: d2 quadra (button), LaCie, 800mbit_speed

I may try this one more time later today or tomorrow; if it happens again, I will wipe that clone and re-do it with CCC and then try it again to see if it could possibly have anything to do with SuperDuper (rather than Mac OS or DW).

Edit: This should be in the Lion forum - sorry - will report myself (if I can - don't see a report button) or someone could please have it moved........ thanks.