__createTargetDirs UnicodeEncodeError

[stamparm]

[10:00:34] [CRITICAL] unhandled exception in sqlmap/1.0-dev-4649450, retry your run with the latest development version from the GitHub repository. If the exception persists, please send by e-mail to 'sqlmap-users@lists.sourceforge.net' or open a new issue at 'https://github.com/sqlmapproject/sqlmap/issues/new' with the following text and any information required to reproduce the bug. The developers will try to reproduce the bug, fix it accordingly and get back to you.
sqlmap version: 1.0-dev-4649450
Python version: 2.7.1+
Operating system: posix
Command line: sqlmap.py -u ******************* --forms -o --random-agent
Technique: None
Back-end DBMS: None (identified)
Traceback (most recent call last):
File "/home/stamparm/Dropbox/Work/sqlmap/_sqlmap.py", line 72, in main
start()
File "/home/stamparm/Dropbox/Work/sqlmap/lib/controller/controller.py", line 346, in start
setupTargetEnv()
File "/home/stamparm/Dropbox/Work/sqlmap/lib/core/target.py", line 441, in setupTargetEnv
__createTargetDirs()
File "/home/stamparm/Dropbox/Work/sqlmap/lib/core/target.py", line 402, in __createTargetDirs
f.write(kb.originalUrls.get(conf.url) or conf.url or conf.hostname)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 32-45: ordinal not in range(128)