From: "Jonas Pfenniger (zimbatm)" Date: 2011-01-15T05:00:30+09:00 Subject: Re: need assistance in error Hi Balabaskaran, it is really hard to tell because I don't use windows, but here are some steps you can take: * Did you try to ask your question on the Watir google group ? They maybe have a better idea of what is happening. See http://groups.google.com/group/watir-general * Try upgrading ruby. http://rubyinstaller.org/ is a really wonderful windows package. Maybe stick with 1.8.7 if you already have some code base. These kind of errors appear either because you passed the wrong type of argument or method, or because the API is not compatible with your current version of ruby. Hope this help, zimbatm