x11 bin

[cbookworm]

Have used this utitlity for over a year with no problems. Today it keeps crashing and giving me this message:

Process: X11.bin [4923]
Path: /Applications/Utilities/X11.app/Contents/MacOS/X11.bin
Identifier: X11.bin
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: X [4919]

Interval Since Last Report: 41 sec
Crashes Since Last Report: 3
Per-App Interval Since Last Report: 0 sec
Per-App Crashes Since Last Report: 3

Date/Time: 2010-07-20 18:53:43.398 -0400
OS Version: Mac OS X 10.5.8 (9L31a)
Report Version: 6
Anonymous UUID: 8D75109A-3B3E-4D5F-9727-35B8EB396C09

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 0

Dyld Error Message:
Library not loaded: /usr/X11/lib/libpixman-1.0.dylib
Referenced from: /Applications/Utilities/X11.app/Contents/MacOS/X11.bin
Reason: Incompatible library version: X11.bin requires version 15.0.0 or later, but libpixman-1.0.dylib provides version 13.0.0
I do not know hat it means by incompatible library version or what to do next.Added nothing new to my computer today.