[Couenne] Unknown operator error

[Łukasz Segiet]

Dear All,

I am trying to run Couenne on some .nl files and ipopt has no problems
with them, but Couenne does. This is the output I get.

bash-4.1$ ./couenne problem.nl
Couenne 0.4.8 --  an Open-Source solver for Mixed Integer Nonlinear Optimization
Mailing list: couenne at list.coin-or.org
Instructions: http://www.coin-or.org/Couenne

ERROR: unknown operator (address 0p7f25acb37830), aborting.

Does anyone know what can be the issue and if there are some
limitations on what Couenne can solve (and what is already solvable by
ipopt)?

Sincerely yours,

Lukasz Segiet
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