I'm from university of southern california. I'm using cadence on school's server. However, whenever I try to use calculator to take derivertive or FFT of certain signal, it shows nilERROR (WIA-1091): Data transfer to Visualization & Analysis Tool failed. For assistance, contact Cadence Customer Support with the diagnostic information. The same error appears when I try to take pss simulation. All of my classmates are also running in to this problem. We cann't find the reason. Can someone help us?