Import71 utility fails to import ArcInfo interchange files (*.e00).
Two possible causes:
1) A compression parameter was used when generating the interchange file. The Import71 utility does not support compressed interchange files.
2) The name of the file or the output data source path is not 8.3 compliant. In other words, the name is longer than eight characters, may have special characters (spaces), and/or the extension does not contain three characters.