: the '+' sign is a URL-escape for space, which you : see in the error message.
more specifically, the error indicates that something/somewhere/somehow when you are construction your request to Solr, your HTTP request params are not getting properly escaped -- so the '+' is being sent literlay over the wire, and Solr is URL un-escaping it as whitespace. : Escape it as %2B and you should be fine. Rather then you manually "escaping" just the "+" character in your code, you should instead figure out where/how to ensure that *all* the HTTP communication you have with Solr gets properly escaped -- so you don't have this problem over and over with other params/characters. if you can tell us a bit more about how you communicate with Solr, we can try to help you with the larger problem you are having. (any decent HTTP client library should automatically escape any request param keys/values you ask it to include in the request) -Hoss http://www.lucidworks.com/
