Instruments (Leaks/Activity Monitor/Time Profiler etc.) won't start - what's going on?

I'm sorry if this question was somewhere here already, but I'm struggling with this problem for hours with no results. Long story short - I have a fresh installation of Xcode (version 3.2.5 64bit) and when I try to run my app with a performance tool (let's say Leaks), Instruments just crash, no matter which tool I choose. As I'm a beginner when it comes to Xcode I have no clue what's wrong. Please find the crash report below:

Process: Instruments [4033] Path:

/Developer/Applications/Instruments.app/Contents/MacOS/Instruments Identifier: 开发者_运维技巧 com.apple.Instruments Version: 2.7 (3017) Build Info: Instruments-30170000~6 Code Type: X86-64 (Native) Parent Process: launchd [172]

Date/Time: 2011-03-29 19:43:52.996 +0100 OS Version:

Mac OS X 10.6.7 (10J3250) Report Version: 6

Interval Since Last Report:

118589 sec Crashes Since Last Report: 14 Per-App Interval Since Last Report: 24 sec Per-App Crashes Since Last Report: 5 Anonymous UUID:

5934F52C-EF00-40F1-A0B4-17D52FA623F1

Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000002, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Dyld Error Message: Symbol not found: _CSSymbolicatorCreateWithMachKernel Referenced from: /Developer/Applications/Instruments.app/Contents/MacOS/../../../../Library/PrivateFrameworks//InstrumentsPlugIn.framework/Versions/A/InstrumentsPlugIn Expected in: /System/Library/PrivateFrameworks/CoreSymbolication.framework/Versions/A/CoreSymbolication

Has anyone experienced something like this before or knows how to fix it? I hope I've formulated my problem descriptively enough. I'd appreciate your help!

Thanks!

After days of fruitless struggle I have just updated my Xcode to version 4 and everything works perfectly fine. I still have no idea what was wrong with my previous installation, but since my Instruments work now, I won't investigate in any longer.