Funky Image References

I've installed this plugin and everything looks just fine with one exception. On the s2Member Information page, the images on the right are missing. In viewing the source, I get references such as "http://www.myURL.com/wp-contentC:\Inetpub\vhosts\myURL.com\httpdocs\wp-content\plugins\s2member/images/brand-updates.png". It's fairly obvious that the "C:\Inetpub\vhosts\myURL.com\httpdocs\wp-content" portion of the reference is incorrectly inserted but why and how do I fix it?