[racket] racket doesn't work with Mac OSX 10.7 (Lion)?

I've downloaded Racket, copied the directory into applications, and try and run and get the following crash report …
Any users having similar problem? Anyone from dev have any thoughts (note, I've tried this 4 times …)
Thanks
Joe
-----
Process:         DrRacket [802]
Path:            /Applications/Racket v5.1.1/DrRacket.app/Contents/MacOS/DrRacket
Identifier:      org.racket-lang.DrRacket
Version:         5.1.1 (5.1.1)
Code Type:       X86 (Native)
Parent Process:  launchd [252]

Date/Time:       2011-08-01 12:41:45.925 -0400
OS Version:      Mac OS X 10.7 (11A2063)
Report Version:  9

Interval Since Last Report:          217 sec
Crashes Since Last Report:           3
Per-App Crashes Since Last Report:   1
Anonymous UUID:                      D66095D8-C881-4B46-AC70-05D7EF1AFA5E

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000

VM Regions Near 0:
--> __PAGEZERO             0000000000000000-0000000000001000 [    4K] ---/--- SM=NUL  /Applications/Racket v5.1.1/DrRacket.app/Contents/MacOS/DrRacket
    __TEXT                 0000000000001000-0000000000008000 [   28K] r-x/rwx SM=COW  /Applications/Racket v5.1.1/DrRacket.app/Contents/MacOS/DrRacket

Application Specific Information:
objc[802]: garbage collection is OFF

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   Racket                        	0x0000f0ab scheme_main_stack_setup + 43
1   org.racket-lang.DrRacket      	0x00003616 main + 54
2   org.racket-lang.DrRacket      	0x00003312 _start + 216
3   org.racket-lang.DrRacket      	0x00003239 start + 41

Thread 0 crashed with X86 Thread State (32-bit):
  eax: 0x00000102  ebx: 0x0000f089  ecx: 0x00000102  edx: 0x00000000
  edi: 0xbffffd7c  esi: 0xbffffdb8  ebp: 0xbffffce8  esp: 0xbffffcb0
   ss: 0x00000023  efl: 0x00010246  eip: 0x0000f0ab   cs: 0x0000001b
   ds: 0x00000023   es: 0x00000023   fs: 0x00000000   gs: 0x0000000f
  cr2: 0x00000000
Logical CPU: 2

Binary Images:
    0x1000 -     0x7ff7 +org.racket-lang.DrRacket (5.1.1 - 5.1.1) <E0F27CCB-B90E-BC7F-57DF-C7C533F53D31> /Applications/Racket v5.1.1/DrRacket.app/Contents/MacOS/DrRacket
    0xe000 -   0x255fef +Racket (??? - ???) <F6EDAF27-6D64-01B1-FCD2-0FD279D5DD11> /Applications/Racket v5.1.1/*/Racket.framework/Versions/5.1.1_3m/Racket
0x8fef8000 - 0x8ff2a9c7  dyld (195.5 - ???) <2B3361DA-2FE2-33AD-A5B4-893CE882AE9C> /usr/lib/dyld
0x91270000 - 0x91270ffe  libkeymgr.dylib (23.0.0 - compatibility 1.0.0) <7F0E8EE2-9E8F-366F-9988-E2F119DB9A82> /usr/lib/system/libkeymgr.dylib
0x913b8000 - 0x914a8ff1  libiconv.2.dylib (7.0.0 - compatibility 7.0.0) <9E5F86A3-8405-3774-9E0C-3A074273C96D> /usr/lib/libiconv.2.dylib
0x914a9000 - 0x9167ffef  com.apple.CoreFoundation (6.7 - 635) <4EE0D62E-5342-3A9F-A740-DA1D5AEBB1B0> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x917fd000 - 0x91805ff3  libunwind.dylib (30.0.0 - compatibility 1.0.0) <E8DA8CEC-12D6-3C8D-B2E2-5D567C8F3CB5> /usr/lib/system/libunwind.dylib
0x92289000 - 0x9228dff3  libsystem_network.dylib (??? - ???) <E1455F3E-549B-3D50-A38B-17B394F3C7F6> /usr/lib/system/libsystem_network.dylib
0x92ab0000 - 0x92b7bfff  libsystem_c.dylib (763.11.0 - compatibility 1.0.0) <C731BC5A-4793-31D9-8427-9DC19E578268> /usr/lib/system/libsystem_c.dylib
0x92c63000 - 0x92c6bff5  libcopyfile.dylib (85.1.0 - compatibility 1.0.0) <97E73059-F645-33F4-BCC5-1FEA367D60D4> /usr/lib/system/libcopyfile.dylib
0x92e1e000 - 0x92e21ff7  libcompiler_rt.dylib (6.0.0 - compatibility 1.0.0) <7F6C14CC-0169-3F1B-B89C-372F67F1F3B5> /usr/lib/system/libcompiler_rt.dylib
0x92e91000 - 0x92e95ffa  libcache.dylib (47.0.0 - compatibility 1.0.0) <9DFB61F2-9B1F-31B2-BF41-099994D74E1F> /usr/lib/system/libcache.dylib
0x92f00000 - 0x92f05ff7  libmacho.dylib (800.0.0 - compatibility 1.0.0) <6DCCA207-8F4D-343A-B77D-C4FB905DADC4> /usr/lib/system/libmacho.dylib
0x92f47000 - 0x92f48ff7  libquarantine.dylib (36.0.0 - compatibility 1.0.0) <C532352C-D502-3CFA-95C9-3B1552EA8D5E> /usr/lib/system/libquarantine.dylib
0x92f49000 - 0x92f50fff  libnotify.dylib (80.0.0 - compatibility 1.0.0) <B3B3875D-311D-31A7-A09F-D1BC56795E00> /usr/lib/system/libnotify.dylib
0x93187000 - 0x931caffd  libcommonCrypto.dylib (55010.0.0 - compatibility 1.0.0) <4BA1F5F1-F0A2-3FEB-BB62-F514DCBB3725> /usr/lib/system/libcommonCrypto.dylib
0x931cb000 - 0x931e9ff7  libsystem_kernel.dylib (1699.23.2 - compatibility 1.0.0) <92922567-64B5-3693-A3CD-9E1031850E3C> /usr/lib/system/libsystem_kernel.dylib
0x934e1000 - 0x934effff  libdispatch.dylib (187.5.0 - compatibility 1.0.0) <1883C8E2-D180-3EA0-8BEF-325F2FEDACD1> /usr/lib/system/libdispatch.dylib
0x934f0000 - 0x934f3ff7  libmathCommon.A.dylib (2026.0.0 - compatibility 1.0.0) <69357047-7BE0-3360-A36D-000F55E39336> /usr/lib/system/libmathCommon.A.dylib
0x93bb3000 - 0x93bb4fff  libsystem_blocks.dylib (53.0.0 - compatibility 1.0.0) <B04592B1-0924-3422-82FF-976B339DF567> /usr/lib/system/libsystem_blocks.dylib
0x93bb5000 - 0x93c1cfff  libc++.1.dylib (19.0.0 - compatibility 1.0.0) <3AFF3CE8-14AE-300F-8F63-8B7FB9D4DA96> /usr/lib/libc++.1.dylib
0x954b1000 - 0x954b2ff5  libremovefile.dylib (21.0.0 - compatibility 1.0.0) <2D891A1F-7FE5-3CD8-8455-8249991180AF> /usr/lib/system/libremovefile.dylib
0x9560c000 - 0x9560dff7  libsystem_sandbox.dylib (??? - ???) <BC0A04E9-4F28-3BC8-AA7B-63C3451E9212> /usr/lib/system/libsystem_sandbox.dylib
0x95b71000 - 0x95d25ff3  libicucore.A.dylib (46.1.0 - compatibility 1.0.0) <6270318A-CA9A-376C-AD6D-64A9B4B4A26E> /usr/lib/libicucore.A.dylib
0x95f57000 - 0x95f59ff7  libdyld.dylib (195.5.0 - compatibility 1.0.0) <637660EA-8D12-3B79-B644-041FEADC9C33> /usr/lib/system/libdyld.dylib
0x95f5a000 - 0x95fbcff3  libstdc++.6.dylib (52.0.0 - compatibility 7.0.0) <266CE9B3-526A-3C41-BA58-7AE66A3B15FD> /usr/lib/libstdc++.6.dylib
0x9918d000 - 0x991cdff7  libauto.dylib (??? - ???) <816348B7-07DC-3E7D-9FDE-143D10579214> /usr/lib/libauto.dylib
0x9a52b000 - 0x9a52bfff  libdnsinfo.dylib (395.7.0 - compatibility 1.0.0) <A870EB56-560C-3DA2-B189-6E0FD2D3B66D> /usr/lib/system/libdnsinfo.dylib
0x9a610000 - 0x9a63efe7  libSystem.B.dylib (159.0.0 - compatibility 1.0.0) <56FD47B7-7CE2-3270-A319-8E137528023D> /usr/lib/libSystem.B.dylib
0x9a6bc000 - 0x9a6cafff  libz.1.dylib (1.2.5 - compatibility 1.0.0) <E73A4025-835C-3F73-9853-B08606E892DB> /usr/lib/libz.1.dylib
0x9a7b9000 - 0x9a7c0ff5  libsystem_dnssd.dylib (??? - ???) <EC680003-9D5A-3949-B13B-8F7931861EB2> /usr/lib/system/libsystem_dnssd.dylib
0x9ae94000 - 0x9aeaaffe  libxpc.dylib (77.16.0 - compatibility 1.0.0) <9DCB8E1D-155E-3553-8EF1-6C4F9F208746> /usr/lib/system/libxpc.dylib
0x9aead000 - 0x9aeb6fff  libc++abi.dylib (14.0.0 - compatibility 1.0.0) <FEB5330E-AD5D-37A0-8AB2-0820F311A2C8> /usr/lib/libc++abi.dylib
0x9b071000 - 0x9b072fff  libDiagnosticMessagesClient.dylib (??? - ???) <DB3889C2-2FC2-3087-A2A2-4C319455E35C> /usr/lib/libDiagnosticMessagesClient.dylib
0x9b073000 - 0x9b0a3ff7  libsystem_info.dylib (??? - ???) <C385F5A9-458A-3B49-9CC7-EA81DC5F9141> /usr/lib/system/libsystem_info.dylib
0x9b0b0000 - 0x9b0b8ff3  liblaunch.dylib (392.18.0 - compatibility 1.0.0) <15D6D66D-4DB9-3BCA-87EE-02EE9B7B6189> /usr/lib/system/liblaunch.dylib
0x9b3ed000 - 0x9b4c3a5b  libobjc.A.dylib (228.0.0 - compatibility 1.0.0) <A0EDB351-4B9D-3AA2-9D1A-0C22204FCCD3> /usr/lib/libobjc.A.dylib
0x9b92d000 - 0x9b92eff0  libunc.dylib (24.0.0 - compatibility 1.0.0) <9EF47F4C-32F6-3379-A3DD-89183D821B48> /usr/lib/system/libunc.dylib

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 1
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 1754
    thread_create: 0
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=52.6M resident=23.5M(45%) swapped_out_or_unallocated=29.2M(55%)
Writable regions: Total=18.5M written=120K(1%) resident=220K(1%) swapped_out=0K(0%) unallocated=18.3M(99%)
 
REGION TYPE                      VIRTUAL
===========                      =======
MALLOC                             10.2M
MALLOC guard page                    32K
Stack                              64.0M
__DATA                              864K
__IMPORT                             12K
__LINKEDIT                         41.6M
__OBJC                               48K
__PAGEZERO                            4K
__PLTSCHEME                           8K
__TEXT                             11.0M
__UNICODE                           544K
mapped file                       200.5M
shared memory                        12K
shared pmap                        9796K
===========                      =======
TOTAL                             338.4M

Model: MacBookAir4,2, BootROM MBA41.0077.B00, 2 processors, Intel Core i7, 1.8 GHz, 4 GB, SMC 1.73f63
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 384 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353737334448302D4348392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353737334448302D4348392020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xE9), Broadcom BCM43xx 1.0 (5.100.98.75.8)
Bluetooth: Version 4.0.0f4, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM256C, 251 GB
USB Device: FaceTime Camera (Built-in), apple_vendor_id, 0x850a, 0xfa200000 / 3
USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0xfa100000 / 2
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x024c, 0xfa120000 / 5
USB Device: BRCM20702 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821f, 0xfa113000 / 8
USB Device: hub_device, 0x0424  (SMSC), 0x2513, 0xfd100000 / 2
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8404, 0xfd110000 / 3