Share A Toolbar That Calls Macro From An Add-in

I have created some macros that need to be used in several workbooks by more than one users, so I put them in an add-in and gave them instructions on how to get the add-in. I also created a toolbar with buttons calling those macros, attached it to a workbook the users can open, and instructed them to open that workbook once to get the toolbar.

Both the add-in and the toolbar workbook are on a network drive that my users can access, but when they get the add-in, it gets copied to their own add-in folder.

Here's my problem:
When a user tries to click on one of the buttons in the toolbar, the button tries to call the macro using the path that would be valid on my computer to get to my add-in folder. This path includes my user name, so it doesn't go to their own add-in folder: it goes to my add-in folder on that computer if I ever logged in on that particular machine, or it goes nowhere.

When I created the button, I attached the macros by referring to the add-in workbook by name only, without referring to a path, so I don't know why MY path ended up defined on that toolbar.

How can I go around this? I manually relinked all the buttons for that user, and I can do it for the other users (there aren't that many users nor that many buttons), but I'd rather avoid it: I'll have to re-do it if the toolbar is updated and it just seems like more work than should be necessary.

I'm also opened to suggestions on a better way to share those macros. They can't be attached to the workbooks because we use new workbooks every year - they're emailed to us by the people who create them and for a variety of reasons, pasting everything into a workbook of our own is not a good option.