Issue:
Revit generates an error when opening the project file and displays the version as unknown.
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The following line appears in the journal file:
Load exception "COleException", code=0x80004005: Unspecified error
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Causes:
The file is not actually a Revit file. The user renamed the file extension from .zip to .rvt.
Solution:
The file may be recoverable by restoring the correct file extension.
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1. Â Â Rename the file extension from .rvt to .zip.
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2. Â Â Extract the ZIP file to verify the contents inside.
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3. Â Â Open the Revit file as detached.
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If the Revit file is corrupted, request a new copy of the file from the file provider.
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