We have posted a new release that will require a full uninstall/reinstall. This is a pre-release of the final 2010 version--i.e., it's no longer a beta version. Here is a link to the November 11, 2010, pre-release:
[link removed]
If you are reading this after November 15, 2010, you should check the www.empirisoft.com/download.aspx to see if a newer version of DirectRT 2010 has been posted. The post above refered to version v2010.2.102. It fixes some inconsistencies we were finding in the timing of screen displays of some system configurations. SSmith, it may resolve the issue you have on the older machines. Glad to hear the later beta works well on your newer machines. Feel free to check it out.