Problem:

While installing a Vision instance of 11.5.10.2, the following errors appears:

RW-20003: Error: Unzip failed: unknown reason.
Check log file for details.

General solution:

Verify file owner and group settings for EBS staging area.
Redownload, restage installation media from DVD or E-Delivery.
Verify MD5 checksums for files downloaded from E-Delivery.

Solution (in this case):

/u00/Stage11i/oraApps/Disk4/appl/stage/fnd_WEB3.zip corrupt. Restage.

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