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Kaspersky recently started to report the Win32 executable "klayout.exe" in version 0.19.3 as a trojan (Trojan.Win32.Vilsel.abzb). That can be verified with Kaspersky's online scanner (http://www.kaspersky.com/de/virusscanner).
Only version 0.19.3 is reported, 0.19.2 and 0.20 are not considered dangerous.
klayout.exe of 0.19.2 and 0.19.3 differ in a few bytes only - namely date and version strings. This I hope, serves as a proof that there is no trojan hidden inside klayout.exe in version 0.19.3. Obviously, I have managed to trigger the signature detector inside the Kaspersky scanner.