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---
layout: posts
title:  "Dynare 4.5.6 Released"
date:   2018-07-26
related: true
categories:
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  - new-dynare-release
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tags:
  - release notes
---

We are pleased to announce the release of Dynare 4.5.6.

This is a bugfix release.

This release is compatible with MATLAB versions 7.5 (R2007b) to 9.3 (R2018a)
and with GNU/Octave versions 4.4.

## Bug Fixes

Here is a list of the problems identified in version 4.5.5 and that have been
fixed in version 4.5.6:

- TaRB sampler: incorrect last posterior was returned if the last draw was rejected.
- Fixed online particle filter by drawing initial conditions in the prior distribution.
- Fixed evaluation of the likelihood in non linear / particle filters.
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- Added missing documented `montecarlo` option in Gaussian Filter and Nonlinear Kalman Filter.
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- Added back a flag to deal with errors on Cholesky decomposition in the Conditional Particle Filter.
- Macroprocessor `length()` operator was returning `1` when applied to a string. Macroprocessor now raises an error when `length()` operator is called on an integer and return the number of characters when applied to a string.
- `mode_compute=8`: the error code during mode-finding was not correctly handled, resulting in crashes.
- Identification was not correctly displaying a message for collinear parameters if there was no unidentified parameter present.