#28 problem with an excel add-in, it works only into my pc!!

[Mario Rossi]

Hi, i\'m new so forgive me if this is the wrong place to post this. I followed this video https://www.youtube.com/watch?v=_mpw5_JW7T4 to make an excel add-in. It simply involves two functions that return domain (getDomain) and path (getPath) if you write an URL in a cell. The problem is that my add-in works only into my pc! I tried to make it work in another pc but excel tells me \"the format of the file you are trying to open is different from the specified one...\" and if i choose yes, excel open the add-in but it doesn\'t work... why this message?? i used Excel 2007 and Visual C++ 2008 Express Edition like in the video