[Freesurfer] tkmedit and tksurfer error

Hi Freesurfers, I just installed freesurfer-Linux-centos4_x86_64-stable-pub-v3.0.3 on FC5 linux,x86_64 platform. I'm getting the following errors for tkmedit and tksurfer respectively:

tkmedit bert orig.mgz freeglut (tkmedit): Unable to create direct context rendering for window 'Medit: 'This may hurt performance. X Error of failed request: GLXBadContext Major opcode of failed request: 143 (GLX) Minor opcode of failed request: 5 (X_GLXMakeCurrent) Serial number of failed request: 29 Current serial number in output stream: 29

tksurfer bert rh pial tksurfer: error while loading shared libraries: libtix8.1.8.4.so: wrong ELF class: ELFCLASS64

Please advise! regards, Vish

PS: i'm using tksurfer-fc5 as given in the online instructions.