Attached patch coming from matplotlib corrects the problem -- Fabrice Silva
--- trunk/matplotlib/lib/matplotlib/__init__.py 2007/10/21 16:02:07 3975 +++ trunk/matplotlib/lib/matplotlib/__init__.py 2007/11/02 12:55:51 4094 @@ -234,12 +234,11 @@ def checkdep_ghostscript(): try: if sys.platform == 'win32': - command = 'gswin32c -v' + command = 'gswin32c --version' else: - command = 'gs -v' + command = 'gs --version' stdin, stdout = os.popen4(command) - line = stdout.readlines()[0] - v = line.split()[-2] + v = stdout.read()[:-1] vtest = '.'.join(v.split('.')[:2]) # deal with version numbers like '7.07.1' float(vtest) return vtest