Gustavo,

As I understand it, as from VFP 3.0 FoxPro was able to detect and correct the most common DBF corruptions, that of "not a database file". As a result, no tool is required to fix this error since VFP does it itself.

For other errors, I'm afraid I can't help further.

Reference:
Teaching New FoxPro Old Tricks by Dave Jinkerson & Bob Grommes. FoxTalk June 1997.