i have even tried doing a new project in which i have used only one LEd connecting to VCC and GND and tried running the project. i am getting an error like
Cannot find model file 'LEDA.MDF'.
Pin 'K' is not modelled. [D1]
Pin 'A' is not modelled. [D1]
Simulation FAILED due to netlist linker error(s).
and also tried running JV16 as xpress_embedo said to do so...
but still the problem has not yet solved.
infact the problem has rise to a new level. when i try to make a new component by clicking on a design and select MAKE DEVICE option, it again gives me an error that the libraries are read only and cannot make a device. (ERROR PHOTO ATTACHED)
so what i have done is gone to library manager and then selected CREATE LIBRARY,
but still dont understand how to overcome this issue of libraries.