If you are using uncompressed XML files as the source files for partial updates, you should keep in mind that the data/partials/processing directory also contains other XML files (i.e., the project configuration XML files).
Therefore, if you are using a wildcard in the URL field for the input record adapter, you must make sure that it does not also reference the configuration XML files.
URL: *.xmlInstead, you should use a URL setting that references the INCR prefix of the output filename, similar to this example:
URL: *-INCR.xml
This will load files such as CrawlerOutput-INCR.xml but not the configuration files. See the Oracle Endeca CAS Developer's Guide for details on the naming format of the crawl output files.