After installation- iTunes disappears

Question

After I try to upgrade it seems like it works and a white box appears on the desktop and when installation finishes, the box disappears and iTunes appears to not be loaded on my computer. I was wondering what is causing the issue.

Answer 1

I sent it..
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 6.5.2.10
GetQTInstallInfo: Older QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 3 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 6.5.2.10
GetQTInstallInfo: Older QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 3 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 6.5.2.10
GetQTInstallInfo: Older QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 3 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 6.5.2.10
GetQTInstallInfo: Older QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 3 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePostInstallProc Enter
Setting up iTunes MIMEAndFileType overrides
RunQTSetupAssistant Enter
RunQTSetupAssistant Exit
QuickTimePostInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
Process using QT - ybrowser.exe
Process using QT - iTunes.exe
     Current QT processes = 2
Terminate QTML on qttask
Process using QT - ybrowser.exe
Process using QT - iTunes.exe
     Current QT processes (again) = 2
     Current QT processes still > 0
Will check for QT version: 7.0.3.25
Found DLL "QuickTime.qts", version = 7.0.2.120
GetQTInstallInfo: Older QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 3 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 7.0.2.120
GetQTInstallInfo: Same QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 1 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 7.0.2.120
GetQTInstallInfo: Same QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 1 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 7.0.2.120
GetQTInstallInfo: Same QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 1 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.2.120
Found DLL "QuickTime.qts", version = 7.0.2.120
GetQTInstallInfo: Same QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 1 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current QT processes = 0
Will check for QT version: 7.0.3.25
Found DLL "QuickTime.qts", version = 7.0.2.120
GetQTInstallInfo: Older QuickTime installed
GetQTInstallInfo: is QTPro - no, upgrade would invalidate - no
Final result: 3 (error=0)
QuickTimePreInstallProc Exit (error=0)
QuickTimePreInstallProc Enter
     Current Q