Dodge Data & Analytics has historically distributed drawing files using the extension “.pln”. These were actually TIFF files. They just had a different extension. Dodge Data & Analytics’s Dodge View application registered itself as the default application for PLN files. If you are using eTakeoff in place of Dodge View, you may want to register eTakeoff as the default application for PLN files. Press F1 from the PLN File Registration window to get help for this panel. * NOTE: You may need to run eTakeoff as “Administrator” to be able to click on Yes to register this setting.