Are those functions documented anywhere? There is nothing in the "skse64_whatsnew.txt" about those are any of the "light mod functions". When was IsPluginInstalled() added. I've never seen that one before. Do I need to scan through all the SKSE script files for new functions each time there is a new release? But, of course, that doesn't resolve the issue with existing mods. They still need to be updated since the functions that have been in use for years don't work with ESL flagged plugins.