Hi all,I'm currently using the Quartus 2 V15 and created a schematic file which compiles ok. when attempting to simulate I have the following error: **** Running the ModelSim simulation **** c:/altera/15.0/modelsim_ae/win32aloem//vsim -c -do multiplier.do Unable to checkout a license. Vsim is closing. ** Fatal: Invalid license environment. Application closing. Unable to checkout a license. Make sure your license file environment variables are set correctly and then run 'lmutil lmdiag' to diagnose the problem. Modelsim-Altera uses the following environment variables to check the licenses (listed in the order of preference) 1. MGLS_LICENSE_FILE 2. LM_LICENSE_FILE. Error. I have looked on the Altera website which indicates I do not need a license. does anyone have any recommendations?