Welcome to try this RIOTS_95 for Matlab R2017b built using MinGW GCC 5.3. It's been 20 plus years since my first successful building and running RIOTS under Windows 95 in 1996. Today, I am proud to announce that, RIOTS is reborn and it has been totally rebuilt under Windows 10, using free compiler MinGW GCC 5.3 for Matlab R2017b, and MEX64. Meanwhile, we also successfully rebuit RIOTS under Ubuntu 16.04 with MinGW64 (tested on R2015b). I firmly believe that RIOTS is still shining and very useful. We have recently put RIOTS in use for MPC (model predictive control) for MIMO systems and my near term dream is to make RIOTS embedded. Another note is that, we made fractional order optimal control problem solver based on RIOTS. For more infomation: Check http://mechatronics.ucmerced.edu/riots It is understandable that, solving OCPs without doing any programming needs some efforts in learning the steps. Following the sample OCP problem codes and user's manual http://www.schwartz-home.com/riots/manual.pdf one should be able to learn to solve own OCPs in M-file interface or C-file interface (much faster!). To run the RIOTS demos, cd \riots_demo, type "riotsdem". OCP problems are described in the user's manual and the codes are in "OCP-in-m" and "OCP-in-c" directories. You may have trouble in using sp_plot.m for visualize the OCP results in the RIOTS demo if you DO NOT have the Curve Fitting Toolbox -- Spline Functions (previously Splines Toolbox). Send me an email (yqhen@ieee.org) to have a new sp_plot.m that can plot RIOTS results without Curve Fitting Toolbox. RIOTS is not a public freeware. This is a demo version that you can only see how OCPs are solved in RIOTS. To solve your own OCPs, you will need to purchase a license. Student version is M-file interface only. Customerized student version could be made free on the case-by-case basis if the user OCP is motivated by real world problems, described/formulated clearly and open for joint solution effort. Using RIOTS is addictive! Let us not to forget our RIOTS' creator: Dr. Adam L. Schwartz! YangQuan Chen Email: yqchen@ieee.org 1/28/2018 @ Merced, California.