AMPL IDE usage issue

Question

I want to use AMPL student version. also I apply its IDE for mathematical modelling, but when I open it, it pop-up a box showing the following message.

A valid AMPL license file could not be found for this machine. For assistance, copy this entire message and send it to licensing@ampl.com. Details: License file ampl.lic not found anywhere in $PATH.

What can I do to fix this issue?

Answer 1

The AMPL IDE distribution available for download from http://www.ampl.com/IDE/ includes a full version of ampl which requires a license. To use the student version, you need to replace the ampl and solver binaries in the amplide/ampl directory with their student versions available here.

Alternatively, you can download a demo version of the IDE from one of the following locations:

• Linux: http://ampl.com/dl/demo/amplide-demo-linux32.tar.gz
• OS X: http://ampl.com/dl/demo/amplide-demo-macosx.tar.gz
• Windows: http://ampl.com/dl/demo/amplide-demo-mswin.zip

Answer 2

Simply place the amplide folder inside the amplcml folder (which is the free student version of AMPL).