found at PdnSetupNgenInstall:
"-------------
5/14/2012 9:15:59 PM - Opening log
5/14/2012 9:15:59 PM - args[0] = /delete
5/14/2012 9:15:59 PM - args[1] = DESKTOPSHORTCUT=
5/14/2012 9:15:59 PM - args[2] = PDNUPDATING=
5/14/2012 9:15:59 PM - args[3] = SKIPCLEANUP=
5/14/2012 9:15:59 PM - args[4] = PROGRAMSGROUP=
5/14/2012 9:15:59 PM - args[5] = QUEUENGEN=
5/14/2012 9:15:59 PM - /delete specified, setting delete=true
5/14/2012 9:15:59 PM - Starting ngen queueing
5/14/2012 9:15:59 PM - InstallAssembly(Interop.WIA.dll, True, False, False)
5/14/2012 9:15:59 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "Interop.WIA" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(ICSharpCode.SharpZipLib.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "ICSharpCode.SharpZipLib" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(PaintDotNet.Base.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.Base" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(PaintDotNet.SystemLayer.Native.x64.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.SystemLayer.Native.x64" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(PaintDotNet.SystemLayer.Native.x86.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.SystemLayer.Native.x86" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(PaintDotNet.SystemLayer.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.SystemLayer" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(PaintDotNet.Resources.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.Resources" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(PaintDotNet.Core.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.Core" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:01 PM - InstallAssembly(PaintDotNet.Data.dll, True, False, False)
5/14/2012 9:16:01 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.Data" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:02 PM - InstallAssembly(PaintDotNet.Effects.dll, True, False, False)
5/14/2012 9:16:02 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.Effects" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:02 PM - InstallAssembly(PaintDotNet.exe, True, False, False)
5/14/2012 9:16:02 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:02 PM - InstallAssembly(Interop.WIA.dll, True, False, True)
5/14/2012 9:16:02 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "Interop.WIA" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:02 PM - InstallAssembly(WiaProxy32.exe, True, False, True)
5/14/2012 9:16:02 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "WiaProxy32" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:02 PM - InstallAssembly(PaintDotNet.SystemLayer.Native.x86.dll, True, False, True)
5/14/2012 9:16:02 PM - run:C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe uninstall "PaintDotNet.SystemLayer.Native.x86" /AppBase:"C:\Program Files\Paint.NET"
5/14/2012 9:16:02 PM - Finished with ngen queueing
5/14/2012 9:16:02 PM - set programsShortcutGroup=
5/14/2012 9:16:02 PM - GetSpecialFolderPath(25)
5/14/2012 9:16:02 PM - SHGetFolderPath(32793)
5/14/2012 9:16:02 PM - SHGetFolderPath returning C:\Users\Public\Desktop
5/14/2012 9:16:02 PM - GetSpecialFolderPath(csidl=25) returning C:\Users\Public\Desktop
5/14/2012 9:16:02 PM - GetSpecialFolderPath(23)
5/14/2012 9:16:02 PM - SHGetFolderPath(32791)
5/14/2012 9:16:02 PM - SHGetFolderPath returning C:\ProgramData\Microsoft\Windows\Start Menu\Programs
5/14/2012 9:16:02 PM - GetSpecialFolderPath(csidl=23) returning C:\ProgramData\Microsoft\Windows\Start Menu\Programs
5/14/2012 9:16:02 PM - linkName=Paint.NET
5/14/2012 9:16:02 PM - description=Create, edit, scan, and print images and photographs.
5/14/2012 9:16:02 PM - desktopLinkPath=C:\Users\Public\Desktop\Paint.NET.lnk
5/14/2012 9:16:02 PM - programsShortcutDir=C:\ProgramData\Microsoft\Windows\Start Menu\Programs
5/14/2012 9:16:02 PM - programsLinkPath=C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Paint.NET.lnk
5/14/2012 9:16:02 PM - workingDirectory=C:\Program Files\Paint.NET
5/14/2012 9:16:02 PM - targetPath=C:\Program Files\Paint.NET\PaintDotNet.exe
5/14/2012 9:16:02 PM - delete: C:\Users\Public\Desktop\Paint.NET.lnk
5/14/2012 9:16:02 PM - retrieving HKLM\SOFTWARE\Paint.NET\ProgramsShortcutPath
5/14/2012 9:16:02 PM - path=C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Paint.NET.lnk
5/14/2012 9:16:02 PM - IsPathInDirectory(C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Paint.NET.lnk, C:\ProgramData\Microsoft\Windows\Start Menu\Programs)
5/14/2012 9:16:02 PM - IsPathInDirectory(C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Paint.NET.lnk, C:\ProgramData\Microsoft\Windows\Start Menu\Programs) returning True
5/14/2012 9:16:02 PM - delete: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Paint.NET.lnk
5/14/2012 9:16:02 PM - about to register shell extension
5/14/2012 9:16:02 PM - ... 32-bit
5/14/2012 9:16:02 PM - shellExtensionPaths[0] = C:\Program Files\Paint.NET\ShellExtension_x86.dll
5/14/2012 9:16:02 PM - ... unregister shell extension
5/14/2012 9:16:02 PM - ... 0: CLSID\{D292F82A-50BE-4351-96CC-E86F3F8049DA}
5/14/2012 9:16:03 PM - ... Paint.NET.1\ShellEx\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}
5/14/2012 9:16:03 PM - Closing log
-------------
5/14/2012 9:16:03 PM - Opening log
5/14/2012 9:16:03 PM - args[0] = /cleanUpStaging
5/14/2012 9:16:03 PM - args[1] = C:\Program Files\Paint.NET\\Staging
5/14/2012 9:16:03 PM - deleting: C:\Program Files\Paint.NET\\Staging\PaintDotNet_1182266000.msi
5/14/2012 9:16:03 PM - rmdir: C:\Program Files\Paint.NET\\Staging
5/14/2012 9:16:03 PM - Closing log"
does that help?