Hi - Running versions: Version: 1.9.1692 mac-intel-osx-x86_64 osx-10.6.8 Version: 1.9.1692 intel-linux-2.6-x86_64 redhat-e5.10 In both cases, I can run an input model I used previously and get rigid and tls to work. With a newer model, I cannot get either to work (and yes, there was a reason I tested rigid on a model that was refined once). Weirder is I have gone from gui on mac to produce an .eff file to transfer to linux - in the .eff file I get: strategy = *individual_sites *individual_sites_real_space rigid_body \ *individual_adp group_adp tls *occupancies group_anomalous despite having checked the rigid and tls boxes Weirder yet, is I hand edit the file to add *rigid *tls and run on the linux machine, and both still get turned off. I diff the input refine.eff files between using the older model and newer, and nothing appears very different. The only thing I can think of is that there could be some legacy .hidden files in the working directory that change something, but it makes no sense once I port everything to a different computer. Anyone have this trouble? Thanks, Dave