Hi, I have redhat9 with kernel with 2.4.21 (final release) info CHANGES a.. updated kernel version example in tcng/README from 2.4.20 to 2.4.21 b.. setup.klib is now compatible with 2.4.21 (final release) (by Dimitry Ketov) c.. fixed setup.klib compatibility with old kernels, like 2.4.3 But i still seems the error with early version tcng from action "make" ======================================================== ./setup.klib sed: -e expression #1, char 61: Invalid range end make[1]: *** [klib/.ready] Error 1 make[1]: Leaving directory `/usr/local/src/tcng/tcsim' make: *** [all] Error 1 ======================================================== anybody help me, please Regard, .:: Cahyo ::.