Thank you, @JohnB5677, @LeticiaF1 for your suggestions. I tried deleting all the items you mentioned but still kept getting the same error "Invalid characters in path 'Premier 2025' when retrying the install. I also ran a search on the entire file system for 'Premier 2025' and deleted all the files containing that reference, but the problem persisted. Then I deleted all of the registry keys associated with Intuit products including TT, also all folders in the file system associated with Intuit. Again, I kept getting the same error on re-running the install. This thing was like a zombie in a horror movie that just keeps coming at you! I have no idea where that pathname was stored.
Finally, the only thing that worked was a complete reinstall of Windows 11, wiping all applications and settings. Actually, in my case, a "PC reset" using the factory reset feature on my HP laptop. Luckily, I had just purchased this laptop specifically to get my taxes done, so nothing was lost (except the evil TT zombie - mmwwwhahahaha).
Following the "PC reset", I did successfully re-download and re-install TT2025, this time making sure to use only the default install location to avoid tempting fate yet again.
Thank you again for responding to my cry for help!
