How to change the where audacity looks for the file data?

Okay, so, I switched computers recently, and I also made a new user account, with a new name. The audacity file in question is now on my computer, along with the data. The problem is when I try to open the file, audacity says “Couldn’t find project data folder: ____.aup”. So how do I fix this?

Audacity looks for the “_data” folder in the same location as the “.aup” project file.
If you copy an Audacity project file over from another computer, you must also copy over the project’s _data file.
See: http://manual.audacityteam.org/man/audacity_projects.html