Xpress-Optimizer and Xpress-SLP patch 27.01.16 for Xpress 7.8 is now available for Windows 64 and 32, Linux 64 and 32 from here.
Xpress-Optimizer release notes:
* Fixed an issue in the dual simplex method where using a non-default dual strategy could lead to cycling.
* Improved sparse matrix ordering in the barrier algorithm on very large problems.
* Fixed an issue in presolve when a problem is declared infeasible.
* Fixed an issue in presolve for symmetric problems that could cause invalid solutions to be returned.
* Fixed an issue related to the MIP solution refiner that could have caused the MIP search to stop unexpectedly.
Xpress-Nonlinear release notes:
* Integer feasible root solutions are automatically detected.
This is the latest Xpress-Optimizer and Xpress-SLP patch for the Xpress 7.8 release branch. Please note that it must be installed over a prior installation of FICO Xpress 7.8 and requires a valid Xpress 7.8 license.