It will work on Windows 10 that is what I'm running. Try this and see if it will work for you, First download your lake and uzip the files in a folder and name the folder whatever your lake name is. Now right click on the folder and scroll down to copy and click it. Now go to your Document folder and find Insight Planner, open it and go to Charts then go to Insight and open it, now right click and paste your lake folder into it. Now go back to Insight Planner and click on Charts now click on refresh a couple times then click on Insight, you should then see your lake file, click on file and then click on OK. It will open up the World Map now move map to the USA and zoom in to where your lake should be. Mine does not show up in the white box you have to go to the USA and zoom in to find your lake. If the refresh does not bring up your lake files close Insight Planner and open back up your lake file should show up now. Hope this works for you.
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