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I hope things are going well. I downloaded version 0.4.2, started X, and typed ./tkeca.tcl, and nothing happened. I don't know much about tcl/tk, so maybe tkeca.tcl isn't an executable? How does this work? I'm really interested in using your software.
could you post any errors you get from console?..you must have tk/tcl installed to run this but even that would give you an error I believe..