Cannot perform STB analysis in cadence

 Hello Guys,

I am using virtuoso 6.1.4 and i was trying to perform STB analysis on a fully differential amplifier. I broke the loop using the cmdmprobe instance from analogLib library.  I tried to Edit the propertites to specify -1 or 1 for differential and common mode respectively but alas, no fields to modify. I went on with the STB analysis setup selecting the probe instance etc. After running the simulation, i get the following message from my CIW window:

INFO (ADE-3070): Simulation completed, but the results may not be available.

 Indeed i tried to access the results from direct plot form but it says "There is currently no analysis data found or selected".

Please i will appreciate any help.

Thanks