[phenixbb] Illegal instruction (core dumped)

Hi Folks, I just finished updating phenix-dev-944 to phenix-dev-975 version on Fedora Core 16 OS intel quad-core machine. When I run phenix from terminal "phenix.refine" I am receiving the following error message "Illegal instruction (core dumped)". This is the first time I saw this error. All the other programs run fine except phenix. I downloaded and installed it twice to see if it was an error of download but it still gives the same message. Is it an installation error or is it a bug in this version? Thanks. -- Hasan DeMirci