On 27.08.2016 07:18, Sumit Asthana wrote: This happens if your dump download was incomplete. It seems that (recently) the download is sometimes interrupted and needs to be resumed to get the whole file. Our implementation is not smart enough to fix this and ends up with an incomplete dump. You can download the dump in any way you like, including using a browser with "safe as". I prefer to use wget. You just need to put it into the right directory where WDTK also puts dumps. When you start WDTK, it reports the file to be downloaded and the place where it puts the download, so this is one way to find out. Dump files are the ones found at https://dumps.wikimedia.org/other/wikidata/ (with the file names used there). They go into the directory named like ./dumpfiles/wikidatawiki/json-20160801 (for the dump https://dumps.wikimedia.org/other/wikidata/20160801.json.gz). The dumpfiles directory is under the directory from where you run your program. Best, Markus