Karl last appeared at Crossing Border on 1998-10-17. It was billed as "Karl Hyde / Tomato Project" and featured "a mix of video, voice and beats":
http://retro.nrc.nl/W2/Lab/Profiel/Border/selectie.html
Here's a picture of his performance:
There's a partial recording (17:39) of the performance available. darkvoice, is this your recording?
http://www.mediafire.com/file/iy28z1...r_Festival.mp3