I have downloaded and installed chimera-1.5.3-linux_x86_64.bin, release date April 05,2011. But after opening a volume data the volume is appearing as random slices. I have checked all the other necessary requirements. I am using RHEL 5.4 and NVIDIA graphics. Please suggest. Thanks, Manidip Shasmal, Research Fellow, Indian Institute of Chemical Biology, kolkata -700032 Do not Remove: [HID]20110408124249826[-HID] **************************************************** VirusFree, Spamfree, power packed email service. ****************************************************