pgadmin1.20 always crashing on os x 10.6.8

hi,

i am unable to start pgadmin 1.20 on os x 10.6.8. it crashes immediately after the double click.
pgadmin version: 1.20 (Released Dec. 19, 2014, 11:25 a.m., 14.8 MB)

the crashreport:

Process: launchd [16577]
Path: /Users/REDACTED/Progs/Progs/pgAdmin3.app/Contents/MacOS/pgAdmin3
Identifier: org.postgresql.pgadmin
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [204]

Date/Time: 2014-12-24 14:43:55.238 +0100
OS Version: Mac OS X 10.6.8 (10K549)
Report Version: 6

Interval Since Last Report: 644393 sec
Crashes Since Last Report: 3
Per-App Crashes Since Last Report: 3
Anonymous UUID: REDACTED

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000008fe01030
Crashed Thread: Unknown

Backtrace not available

Unknown thread crashed with X86 Thread State (32-bit):
eax: 0x00000000 ebx: 0x00000000 ecx: 0x00000000 edx: 0x00000000
edi: 0x00000000 esi: 0x00000000 ebp: 0x00000000 esp: 0x00000000
ss: 0x0000001f efl: 0x00010202 eip: 0x8fe01030 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000000
cr2: 0x8fe01030

Binary images description not available

Model: MacBookPro6,2, BootROM MBP61.0057.B0F, 2 processors, Intel Core i7, 2.66 GHz, 8 GB, SMC 1.58f17
Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 512 MB
Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.10.131.42.4)
Bluetooth: Version 2.4.5f3, 2 service, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST750LX003-1AC154, 698.64 GB
Serial ATA Device: MATSHITADVD-R UJ-898
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: Keyboard Hub, 0x05ac (Apple Inc.), 0x1006, 0xfa140000 / 6
USB Device: Apple Keyboard, 0x05ac (Apple Inc.), 0x0221, 0xfa142000 / 8
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfa130000 / 5
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0xfa113000 / 7
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0237, 0xfa120000 / 3
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: iPhone, 0x05ac (Apple Inc.), 0x12a8, 0xfd130000 / 5
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000 / 4
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0xfd110000 / 3