In order to run Dynare, Octave needs to have packates installed.
These packages don't seem installed on Sedna. That is maybe why the current testsuite reports on the results for 44 tests.
Here is the code needed to add this packages. Maybe it could be added in README.md file for Dynare on github:
pkg install -forge io pkg install -forge struct pkg install -forge optim pkg install -forge control pkg install -forge statistics
Best