iTunes crash

[broadband]

Hi Guys,

i have a big problem with the itunes on my Imac. The OS version is:10.7.8 and the itunes version 11.4

part of the displayed error is:

Process: iTunes [491]
Path: /Applications/iTunes.app/Contents/MacOS/iTunes
Identifier: com.apple.iTunes
Version: 11.4 (11.4)
Build Info: iTunes-1140011004000018~1
Code Type: X86-64 (Native)
Parent Process: launchd [119]

Date/Time: 2014-10-05 16:17:43.047 +0300
OS Version: Mac OS X 10.7.8 (10K549)
Report Version: 6

Interval Since Last Report: 57744 sec
Crashes Since Last Report: 21
Per-App Interval Since Last Report: 628 sec
Per-App Crashes Since Last Report: 5
Anonymous UUID: 208D78D7-8926-4DB0-A5FF-9C379708B24C

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Crashed Thread: 20

Dyld Error Message:
Symbol not found: _IOPMAssertionCreateWithDescription
Referenced from: /Applications/iTunes.app/Contents/MacOS/iTunes
Expected in: /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit

Could please anyone who knows about this, share an option about how to fix it?