Protein Explorer (PE) 2.72, released 16 hours ago, had this bug: If you started Empty Explorer, then loaded an ordinary PDB file (not a PiPE) by any of the four mechanisms at the "Load Molecule" control panel, the FirstView rendering failed to display. Thanks to Gabriel Pons for reporting this so quickly! This bug has been fixed in PE 2.721, just released and downloadable. When you download this (or a future) new version of PE and install it, it will create a new folder, in this case "Protein Explorer 2.721 Alpha", leaving your previous version intact (which you may delete later). It will also overwrite all of the downloaded files in the folder "my_molecules" and its subfolders. Provided you have followed the instructions in PE 2.72 for setting up your own PiPEs, they will not be affected, but will be redirected to work with the new version of PE. Technical info about the way this works: PiPEs you create are put in new folders, e.g. my_pipe1, which do not exist in the download, so are not overwritten. However, all PiPEs use the file my_molecules/pipes/template/pe_path.js in order to locate PE. This file is updated with each download of a new version. Thus, existing PiPEs you created will use the new version of PE automatically. Similarly, links to PiPEs you create are not affected: The downloaded document my_molecules/pipes/example.htm contains a link to "My PiPEs" which goes to a non-existent document my_molecules/pipes/mypipes.htm. When you create PiPEs, the links to them are created in mypipes.htm, which you first create by copying the downloaded file my_molecules/pipes/blank.htm. Again, since mypipes.htm is not included in the downloaded, your links to your PiPEs are not affected. You can always get to your PiPEs from the FrontDoor of your downloaded PE by clicking "Presentations in PE", then "Example PiPEs", then "My PiPEs". -Eric ---- Eric Martz, Professor Emeritus, Dept Microbiology University of Massachusetts, Amherst MA US http://www.umass.edu/molvis/martz