Sorry I must have copied the log from a subsequent attempt.
Here is the correct log:
MSI (s) (34:2C) [10:08:56:678]: Executing op: SetSourceFolder(Folder=1\PROGRA~1\Adobe\READER~1\Reader\AcroExt\|program files\Adobe\Reader 11.0\Reader\AcroExt\)
MSI (s) (34:2C) [10:08:56:678]: Executing op: FileCopy(SourceName=AcroExt.exe,SourceCabKey=acroext.exe,DestName=AcroExt.exe,Attributes= 16384,FileSize=1070824,PerTick=65536,,VerifyMedia=1,,,,,CheckCRC=0,Version=11.0.10.32,Lang uage=1033,InstallMode=58982400,,,,,,,)
MSI (s) (34:2C) [10:08:56:678]: File: C:\Program Files (x86)\Adobe\Reader 11.0\Reader\AcroExt\AcroExt.exe; To be installed; Won't patch; No existing file
MSI (s) (34:2C) [10:08:56:678]: Source for file 'acroext.exe' is compressed
MSI (s) (34:2C) [10:08:56:694]: Note: 1: 1334 2: acroext.exe 3: Data1.cab
MSI (s) (34:2C) [10:08:58:316]: Product: Adobe_AcrobatReader_v11.0.11 -- Error 1334.The file 'acroext.exe' cannot be installed because the file cannot be found in cabinet file 'Data1.cab'. This could indicate a network error, an error reading from the CD-ROM, or a problem with this package.
MSI (c) (04:7C) [10:08:56:694]: Font created. Charset: Req=0, Ret=0, Font: Req=MS Shell Dlg, Ret=MS Shell Dlg
Error 1334.The file 'acroext.exe' cannot be installed because the file cannot be found in cabinet file 'Data1.cab'. This could indicate a network error, an error reading from the CD-ROM, or a problem with this package.
MSI (s) (34:2C) [10:08:58:426]: User policy value 'DisableRollback' is 0
MSI (s) (34:2C) [10:08:58:426]: Machine policy value 'DisableRollback' is 0
Action ended 10:08:58: InstallFinalize. Return value 3.
MSI (s) (34:2C) [10:08:58:426]: Executing op: Header(Signature=1397708873,Version=500,Timestamp=1187795226,LangId=1033,Platform=0,Scrip tType=2,ScriptMajorVersion=21,ScriptMinorVersion=4,ScriptAttributes=1)
MSI (s) (34:2C) [10:08:58:426]: Executing op: DialogInfo(Type=0,Argument=1033)
MSI (s) (34:2C) [10:08:58:426]: Executing op: DialogInfo(Type=1,Argument=Adobe_AcrobatReader_v11.0.11)
MSI (s) (34:2C) [10:08:58:441]: Executing op: RollbackInfo(,RollbackAction=Rollback,RollbackDescription=Rolling back action:,RollbackTemplate=[1],CleanupAction=RollbackCleanup,CleanupDescription=Removing backup files,CleanupTemplate=File: [1])
MSI (s) (34:2C) [10:08:58:441]: Executing op: ActionStart(Name=InstallFiles,Description=Copying new files,Template=File: [1] Size: [6] bytes)
The entire log is much longer but the error is referenced above.