There is a python script that will compress your runtime too. It is quite handy. It shold be in your python directory. You can tell it to compress the files and delete the uncompressed ones (or keep them but I don't know why you would want to). I did it on my ProPack installation and it saved me about a gig of space. It will compress .cr2 to .crz, .pp2 to .ppz etc... You don't lose anything. You just gain space. The one caviot is that compressed files show up as unlegible information in a text editor. SO... If you want to edit say... a .cr2 from a figure you just need to save it into your library with compression turned off in your prefs. Then it saves the figure as a .cr2 and can be edited. Cheers, Joe