Question: evaluation of dsovle(.) takes forever with NO errors...

I am trying to solve a system of nonlinear 36 differential-algebraic equations numerically in Maple. The last line of my code is the dsolve(.) command which is used to solve the DAE system. My problem is that it takes forever to evaluate the dsove(.) command. Maple does not give me any errors/warning, however, it keeps evaluating, and evaluating...nothing happens...

 

I have used stiff solvers as well hoping to make the process faster but that dowsn't work either.

 

I would greatly appreciate it if you could help me with this issue.

 

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