Unknown Error was a British drum-and-bass production and DJ duo comprising Rob Dickeson and Jim Gash. The pair were born and raised in Kent, England, and released music through Renegade Hardware, Trouble on Vinyl, Cymbalism and Moving Shadow. Their track “Shadows” appeared on Renegade Hardware in 2005 and reached number eight in the BBC 1Xtra DnB charts. It also appeared on the label’s The Chronicles Vol. 4 EP.
Unknown Error released the Heaven and Hell EP on Moving Shadow and “The Yearning” on Horizons Recordings. The EP included “Hellraiser,” “Struggle,” “Future Punishment” and “Easy Rider.” The duo also released “No Escape / Communicate” with Subsonik and remixed Kryptic Minds and Leon Switch’s “More Like You.” After the duo split, Jim Gash continued under the Unknown Error name, while Rob Dickeson pursued a solo career as Apex. As a solo artist, Gash released “Alone” on the DreamThief LP on Horizons Recordings.