One of our customer has an Internal error 2359, which means "Unable to create the target file - file may be in use. " I had him to execute the installation from the command line to create a MSi log file. This is a part of this log file. As far as I understand the problem was occured when the Windows Installer tried to put file mapi32.dll in the installation folder (c:\Program Files\Heroix\eQ\Bin). What may be a reason of this? This machine has Windows NT 4 Service Pack 6.
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MSI (s) (08:8F): Executing op: SetTargetFolder(Folder=C:\Program Files\Heroix\eQ\Bin\
MSI (s) (08:8F): Executing op: FileCopy(SourceName=F208406_mapi32.dll,DestName=mapi32.dll,Attributes=16384,FileSize=131072,Version=1.0.2536.0,Language=1033,InstallMode=58982400,PerTick=32768,IsCompressed=1,,Veri
fyMedia=1,,,,,)
MSI (s) (08:8F): File: C:\Program Files\Heroix\eQ\Bin\mapi32.dll; To be installed; No existing file
InstallFiles: File: mapi32.dll, Directory: C:\Program Files\Heroix\eQ\Bin\, Size: 131072
MSI (s) (08:8F): Note: 1: 2318 2: C:\Program Files\Heroix\eQ\Bin\mapi32.dll
MSI (s) (08:8F): Note: 1: 2359
Internal Error 2835. ErrorIcon, SetupError
Internal Error 2359.
Action ended 12
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Any helps would be great appreciated,
Thanks,

