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Why WiX?
ICE04

What does ICE04 check?

ICE04 validates that the sequence number of every file in the File table is less than or equal to the largest sequence number in the LastSequence column of the of the Media table.

When does ICE04 show up?

ICE04 posts an error message if there is a file with a sequence number greater than the largest LastSequence number for the source media.

How can I fix ICE04?

LastSequence column in Media table holds the maximum number allowed for a sequence number of a file. In order to fix this, the largest LastSequence number for the source media needs to be incremented.