Origin Version: 8.1 Service Release: 0 Operating System: Windows 10 Home
We have an older install of Origin which works OK except for one thing. The NLFit dialog does not come up so we cannot do any non-linear fits (including exponential and sigmoidal fits). We can however perform linear and polynomial fits. I tried starting the NLFit dialog from the script window using nlbegin but I get no error message. The dialog simply does not show up.