running s3cmd on ubuntu server 12.04

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!     An unexpected error has occurred.   Please report the following lines to:    s3tools-bugs@lists.sourceforge.net !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Problem: ValueError: unsupported format character '.' (0x2e) at index 3 S3cmd:   1.0.0 Traceback (most recent call last):   File "/usr/bin/s3cmd", line 2006, in <module>     main()   File "/usr/bin/s3cmd", line 1795, in main     cfg = Config(options.config)   File "/usr/share/s3cmd/S3/Config.py", line 88, in __init__     self.read_config_file(configfile)   File "/usr/share/s3cmd/S3/Config.py", line 105, in read_config_file     cp = ConfigParser(configfile)   File "/usr/share/s3cmd/S3/Config.py", line 142, in __init__     self.parse_file(file, sections)   File "/usr/share/s3cmd/S3/Config.py", line 170, in parse_file     print_value = (data["value"][:2]+"...%d_chars..."+data["value"][-1:]) % (len(data["value"]) - 3) ValueError: unsupported format character '.' (0x2e) at index 3 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!     An unexpected error has occurred.     Please report the above lines to:    s3tools-bugs@lists.sourceforge.net !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!