have you tried applying hot fix? It should be available for download on your customer portal.
We have made the classic Switch Port Mapper deprecated, but it is still included in 10.7. You will find it in the Toolset installation folder, it is named Deprecated_SwitchPortMapper.exe. If you experience any issues with the new version, you may still use this one as a temporary work-around. However, I would highly suggest opening a support case so we could analyze this issue and fix it in the latest version.
Thanks for the suggestion to use Deprecated_switchport.
now i can view my ctron / enterasys switches.
I have downloaded ver 10.7 hotfix 2 but still can not open ctron with the new switch port mapper.