'readObject' function 'load'

[Margrate]

/lua/5.1/torch/File.lua:343: unknown Torch class <nn.ZeroGrad> stack traceback: [C]: in function 'error' .../torch/install/share/lua/5.1/torch/File.lua:343: in function 'readObject' ... .../torch/install/share/lua/5.1/torch/File.lua:353: in function 'readObject' .../torch/install/share/lua/5.1/torch/File.lua:369: in function 'readObject' .../torch/install/share/lua/5.1/nngraph/gmodule.lua:495: in function 'read' .../torch/install/share/lua/5.1/torch/File.lua:351: in function 'readObject' .../torch/install/share/lua/5.1/torch/File.lua:409: in function 'load' /GFRNet/util/util.lua:212: in function 'load' test.lua:60: in main chunk [C]: in function 'dofile' ...hare/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:150: in main chunk [C]: at 0x004064f0