Android Packaging Error: Access to ant.bat Denied?

I’m encountering this issue when trying to package for Android:

Program.Main: ERROR: AutomationTool terminated with exception: System.UnauthorizedAccessException: Access to the path 'C:\ProgramData\NVPACK\apache-ant-1.8.2\bin\ant.bat' is denied.

I’ve checked and the file is there, in the correct directory - I have full read and write permissions…
I can’t figure out what the problem is?