Question: Cannot find info on this error...

I am trying to solve this ode numerically in Maple 11.


ode1 := (diff(y(x), x))^2+4*c*(diff(y(x), x))+4*c^2*y(x)/(1-x^2);


dsn3 := dsolve({ics, ode1}, numeric);


But I get the following error:


Error, (in DEtools/convertsys) unable to convert to an explicit first-order system


What does this error mean?  The function y(x) is valid on {0,1}



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