The file nagctlr.dll is a component of the NAG Controller Application made by The MathWorks, Inc. The NAG Controller Application helped integrate NAG Toolbox with MATLAB. The Numerical Algorithms Group now supports the NAG Toolbox instead of The Mathworks, Inc. If you are having a problem with this file, you may need to reinstall the NAG Toolbox or upgrade to the most current version. The problem may also be a simple registry issue that you can solve by cleaning your registry.
Cleaning your registry is the act of checking through the registry database looking for errors and fixing them. The registry database is large and complex. It contains information about all the programs installed on your Windows system. ZookaWare PC Cleaner can tackle the task of cleaning it for you. ZookaWare PC Cleaner finds and fixes every error in your registry and gets your system back to 100%. Try a free ZookaWare PC Cleaner scan to see what sort of mistakes are hiding in your registry waiting to make your life miserable.