Hello All, I am having an issue with an old piece of IDL code that I inherited from a colleague. Part of the code involves creating a new file, but I am getting an error when creating the header for this new file. The error message that I am getting is "Attempt to call undefined procedure/function: 'ENVI_SETUP_HEAD'." This code has worked in the past, but only in IDL v8.0, whereas I am getting the error when running it in IDL v8.2 I have modified the original code (removing widgets that opened an existing file and created a new file), but have not touched the header area. Would someone be able to help me determine if this error is due to the difference in versions, or if it due to my changes? I would like to be able to test this in 8.0, but cannot get a license for that version. Many thanks SM