RunTime Error is a location specific video-performance. The video material is optimally produced three days before the concert following three main dogmas: 1. Only objects and instruments found at the location can be used, 2. Each object or instrument can only be used once, and 3. Each sound/action must have an immediate point of association with its neighboring sounds/actions. The objects are organized along with the musicians, if available, on a route going from the stage of the concert hall through the backstage areas, hallways and corridors. This way the space becomes an equivalent to time and playing through the composition will therefore make the commonly used musical metaphor “moving through time” concrete. At the concert these videos will be time-manipulated in a two-part system controlled live with two joysticks. A performance within the performance. Alternatively, the videos reuse old material.