<section begin=bugfixes/>
* Peak intensity errors can now be calculated when using volume integration and replicated spectra ([https://gna.org/bugs/?17457 bug #17457]).
* Failure of the prolate diffusion tensor in model-free analysis - if the tensor is initialised with Da = 0, the tensor is converted to being oblate. This was introduced in [[relax 1.3.6|relax version 1.3.6]].
* relax can now operate without scipy being installed.
* Updated four model-free optimisation system tests to pass under 32-bit Linux.