* Model selection between the global diffusion models no longer fails if all residues of the local τ<sub>m</sub> models have been deselected by model elimination. ([https://gna.org/bugs/?7192 bug #7192])
* The 'angles.py' sample script no longer fails when residue specific relaxation data is missing (corrupt input data). ([https://gna.org/bugs/?7224 bug #7224])
* Prior to executing [[Modelfree4]], [[Dasha]], [[Molmol]], [[Grace]], or [[OpenDX]], tests are run to determine if the binary exists, is executable, and is in the system path. ([https://gna.org/bugs/?7225 bug #7225])
* Model elimination when using the model-free model [[m0]] no longer fails. ([https://gna.org/bugs/?7226 bug #7226])
* The strict checking of the D<sub>a</sub> and D<sub>r</sub> diffusion tensor parameters has been relaxed to allow for optimisation imprecision. ([https://gna.org/bugs/?7297 bug #7297])
* The reading of [[Modelfree4 ]] mfout results files no longer fails when residue specific relaxation data is missing (corrupt input data). ([https://gna.org/bugs/?7277 bug #7277])
* If optimisation returns an infinite value or a NaN value, these are now caught and a RelaxError thrown. ([https://gna.org/bugs/?6503 bug #6503], [https://gna.org/task/?3621 task #3621])
* The [http://www.nmr-relax.com/manual/NOE_script_mode_the_NOE_calculation.html σ<sub>NOE</sub> equations of Chapter 8 of the manual] have been fixed. ([https://gna.org/bugs/?7402 bug #7402])