Member Avatar for cmwhite87

Ok, so the following logs can be viewed after the install fails...

I have access to the software through my University and thus am installing the software by virtually mounting the ISO file using MagicDisc. Once I do that the autorun kicks off the installer and its all downhill from there... until it actually tries to install MS Document Explorer 2008 (the first item on the list to install) but it fails with the following log message.

[09/11/08,07:02:03] Microsoft Document Explorer 2008: [2] f:\setup\..\wcu\dexplore\dexplore.exe could not be unpackaged because it is not a cabinet.
[09/11/08,07:02:04] setup.exe: [2] ISetupComponent::Pre/Post/Install() failed in ISetupManager::InternalInstallManager() with HRESULT -2147467259.
[09/11/08,07:02:05] VS70pgui: [2] DepCheck indicates Microsoft Document Explorer 2008 is not installed.

I've made sure i dont have it already installed... I don't know where else to take this, I've restarted multiple times.

Help?

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Dani AI

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This thread shows a classic installer-failure pattern during the Visual Studio 2008 setup that other posters saw as well. describes a failure when running the setup from a mounted ISO (MagicDisc), reports the same symptom after several installs, and correctly points out that running from a “temporary extraction” or a bad image often causes the unpackager to choke. The core issue is almost always a bad/modified image or the way the image is being accessed rather than a mysterious installer bug.

Checklist and step-by-step fixes that reliably work:

  • Verify the ISO integrity (re-download or compare hashes with the source if available).
  • Avoid running setup from a transient temp-extraction created by archivers; extract or copy the full ISO contents to a local folder or burn the ISO to physical media and run setup from there.
  • Temporarily disable antivirus/real-time scanners and run the installer elevated (Run as administrator).
  • If you want to inspect the file that’s failing, try listing/extracting it with 7‑Zip — if 7‑Zip can’t read it, the file is corrupted and re-obtaining the ISO is required.

Useful commands (examples):

certutil -hashfile "C:\path\vs2008.iso" SHA1
7z x "C:\path\vs2008.iso" -o"C:\VS2008"
7z l "C:\VS2008\wcu\dexplore\dexplore.exe"

If the steps above don’t help, get a clean copy of the ISO (university portal or MSDN image), copy the entire image contents to a local folder (not a network drive), and run setup from there. That flow eliminates most causes: bad image, mount-tool quirks, AV interference, or permissions problems that leave the installer unable to read nested cabinet data.

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Member Avatar for jon80

I've had the same problem while installing Visual Studio 2008, and, it seemed to have happened after a few installations, which were successful.

Did you manage to solve the problem? How?

Member Avatar for Jupiter 2

f:\setup\..\wcu\dexplore\dexplore.exe could not be unpackaged because it is not a cabinet.

this means it is actually lokking for a file inside "setup01.CAB". Perhaps you should create a proper setup dvd with all the files rather than setting up through an extraction.

Winzip allows a setup but what it does is extracts the files to a temp folder then runs the setup procedure then delets the temp folder when setup finishes (Winzip 9 or later).

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