Hello, We have the license for spectre 7.1 as below FEATURE Virtuoso_Spectre cdslmd 7.1 30-nov-2010 300 \nFEATURE Virtuoso_Spectre_GXL_MMSIM_Lk cdslmd 7.1 30-nov-2010 1800 \nFEATURE Virtuoso_Spectre_RF cdslmd 7.1 30-nov-2010 300 \n But the CAD guy has installed MMSIM72. I am not able to run spectre. It says ' Waiting for available license for Virtuoso(R) Spectre' . Is this error due to the difference in licensed and installed version of spectre/MMSIM? Will this issue get solved if i get installed MMSIM71? Please comment. Thanks and Regards, Vedanth