I'm on a Mac. I was able to find information on lmborrow at http://www.exelisvis.com/...ating-Licenses.aspx, which has been set up. I was able to checkout, and verify that I've borrowed. lmutil - Copyright (c) 1989-2013 Flexera Software LLC. All Rights Reserved. Vendor Feature Expiration ______ ________ __________ idl_lmgrd idl 23-Mar-16 23:59 idl_lmgrd envi 23-Mar-16 23:59 idl_lmgrd envi_cartosat 23-Mar-16 23:59 Ok, great, However, I'd like to return. Following the instructions, I try to return and I get: # ./lmutil lmborrow -return idl lmutil - Copyright (c) 1989-2013 Flexera Software LLC. All Rights Reserved. lmborrow: No such feature exists. (-5,412) Does anyone have any idea what I'm doing wrong? -Marcos