my apologies, you are correct; I put the stack trace in an edit of the post and not in the original post.
re version info: Solr Specification Version: 1.3.0.2009.07.08.08.05.45 Solr Implementation Version: nightly exported - yonik - 2009-07-08 08:05:45 NOTE: I have some more info on this NPE problem. I get the NPE error whenever I use debugQuery and the query range has an asterix in it, even tho the query itself should work. For example: These work ok: http://127.0.0.1:8994/solr/select?q=myfield:[* TO 1] http://127.0.0.1:8994/solr/select?q=myfield:[1 TO *] http://127.0.0.1:8994/solr/select?q=myfield:[1 TO 1000] http://127.0.0.1:8994/solr/select?q=myfield:[1 TO 1000]&debugQuery=true These do not work ok: http://127.0.0.1:8994/solr/select?q=myfield:[* TO 1]&debugQuery=true http://127.0.0.1:8994/solr/select?q=myfield:[1 TO *]&debugQuery=true http://127.0.0.1:8994/solr/select?q=myfield:* http://127.0.0.1:8994/solr/select?q=myfield:*&debugQuery=true Not sure if the * gets translated somewhere into a null value parameter (I am just starting to look at the solr code) per your comment -- View this message in context: http://www.nabble.com/how-can-I-use-debugQuery-if-I-have-extended-QParserPlugin--tp25789546p25878964.html Sent from the Solr - User mailing list archive at Nabble.com.