You may need to click ' Enable Editing' and ' Enable Content' after opening the file. Replace the underscore ' with a period '.' And press the ' Enter' key. Right-click the file and select ' Rename'. Free Pavement Design SoftwareĬlick ' Open folder' to locate the file on your computer. The file will be downloaded with an underscore ' instead of a period '.' Before the 'xlsb' or 'xlsm' extension. To downloadjust the program without the installer, click here.OtherNote for XLSB and XLSM downloads: If using Internet Explorer or Edge, right-click the link and select ' Save target as.' If you get an error message, click the ' Retry' button.