Solved by jacobatpytorch in post #2 
              
              
                Hey Jordan, your fc2 looks like it requires an input of size of 1000.  In your forward, it looks like your input x that you are passing may be a bit larger?   See if you can print the size of x (x.size()) before you pass it to fc2 and then adjust your input definition of fc2 to match (input is curre…