Microsoft KB Archive/112995

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PRJ: Err Msg: "The Application...Could Not Be Started"

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Q112995

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The information in this article applies to:


 * Microsoft Project for Windows, version 4.0

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SUMMARY
When you double-click the Microsoft Project icon for a project file that has been sent to you through electronic mail, you may receive one of the following error messages

The application for the attached file 'FILENAME.MPP' could not be started.

where FILENAME.MPP is the name of the attached project file

-or-

No application is associated with the attached file 'FILENAME.MPP'. Use the File Manager to create an association.

When you receive either of these error messages, the attached project file does not open.

CAUSE
The first error message appears if your REG.DAT file does not contain information about Microsoft Project version 4.0. This error message may also appear if the REG.DAT file has been damaged.

The second error message appears if your REG.DAT file is missing, and if the following [extensions] and [embedding] section lines do not exist in the WIN.INI file:

[extensions]

  mpp=C:\WINPROJ\Winproj.exe ^.mpp [embedding]

  MSProject.Project.4=Microsoft Project 4.0 Project,Microsoft Project 4.0      Project,C:\WINPROJ\WINPROJ.EXE,picture

WORKAROUND
To open the attached project file after receiving either of these error messages, start Microsoft Project. You can then double-click the project icon in the mail message and view the attached file.

MORE INFORMATION
When you start Microsoft Project, if your REG.DAT file does not contain information about Microsoft Project, the information is automatically added to this file to register the application. Additionally, if Microsoft Project information is not contained in the [Extensions] section in the WIN.INI file, this information is added automatically to the WIN.INI file when you start Microsoft Project.

This information must be present in order to embed and activate Microsoft Project objects in other applications. It is also necessary to associate Microsoft Project files (.MPP, .MPV, .MPC, .MPW, .MPX) with Microsoft Project. If this information is not contained in the REG.DAT file, and Microsoft Project is not running, you cannot view or edit Microsoft Project embedded objects, attached projects in electronic mail or files in the Windows File Manager by double-clicking the icon.