Need help repairing an IFO

[BorgQueen]

I have a home made DVDR that has 3 episodes of a TV series on it. The 3rd episode won't play. After much searching, I discovered that it's because of a corrupted IFO for that episode.
I've downloaded IFOedit and tried playing with it to see if I could fix that file, but I have no idea what I'm doing.
How do I replace that one IFO, so that the DVD with play the final episode?

[Bob W]

I just delete all the original IFO's then click on the "make new IFO's" button in IFOedit. Also after that I click on "get VTS sectors" in IFOedit.

[Triple_Helix]

The BUP files are backups for the IFOs. Make a copy of the appropriate BUP, change the file extension to IFO, and use it to replace the bad file.

LTA