Like "If you mean Excel gave a danger warning telling you to exit immediately, it means you have security setting set to Medium so ANY spreadsheet file with any Macro coding will give that same danger message since it is possible to code Excel Macro's to do things even as damaging as reformatting a disk drive. The Excel danger message is just Microsoft's way of telling you "If you enable Macro's on this workbook even though you don't trust the creator, then don't blame Microsoft if the file screws up your entire computer system." This file will not function at all if the macro's are disabled. And when it works, it WILL modify the file you exported from CareLink. It will process the data, re-organize the data, then create a new sheet 1 containing the logbook report. The way I do it is first open the Create Logbook file, then open the file exported from CareLink. After opening the CareLink file, if I want the original file retained, I'll immediately save it as a Microsoft Workbook file before running the macro to create the logbook. Then, if I only want to print the logbook report, I'll print the logbook report, then close the file without saving it again. If I want to save the Logbook, I can save it either with a new name to retain the original file, or save it with the same name to over-write the original file. However, the logbook can only be saved as a Workbook file if you want it in usable format. So if you left the original file as the CSV format saved by CareLink, you can still over-write the original file, but the logbook won't look the same next time it's opened and the source data will also be no longer usable. I usually either retain the original source file and print the logbook report and close without saving, or create the logbook and over-write the original file with the resulting Logbook file figuring I only need ONE format of the file."