i am getting the following error when i try to open a .mrc file . i generated a .pdb file and use a pdb2mrc to generate a .mrc file . i tried opening the .pdb file it works fine but when i try to open the .mrc file it gives the error. if anyone has any idea on why this error occurs please let me know thanks sandeep Error while processing test-helix.mrc: ZeroDivisionError: float division (see reply log for Python traceback info) Traceback (most recent call last): File "/home/sandeep/chimera/share/__main__.py", line 56, in ? value = chimeraInit.init(sys.argv) File "/home/sandeep/chimera/share/chimeraInit.py", line 275, in init prefixableType=1) File "/home/sandeep/chimera/share/chimera/__init__.py", line 886, in open models = func(filename, *args, **kw) File "/home/sandeep/chimera/share/VolumeViewer/ChimeraExtension.py", line 30, in open_cb d.add_data_sets([g]) File "/home/sandeep/chimera/share/VolumeViewer/__init__.py", line 175, in add_data_sets self.redisplay_cb() File "/home/sandeep/chimera/share/VolumeViewer/__init__.py", line 459, in redisplay_cb self.show_using_dialog_settings(self.focus_region) File "/home/sandeep/chimera/share/VolumeViewer/__init__.py", line 380, in show_using_dialog_settings tp.update_histograms(data_region) File "/home/sandeep/chimera/share/VolumeViewer/__init__.py", line 1142, in update_histograms cw.update_histogram(data_region, read_matrix, self.dialog.message) File "/home/sandeep/chimera/share/VolumeViewer/__init__.py", line 1465, in update_histogram h.show_data(Numeric.log(s.counts + 1)) File "/home/sandeep/chimera/share/VolumeViewer/histogram.py", line 26, in show_data hscale = float(cheight) / max_height ZeroDivisionError: float division