Whoops! How to open SD files that were renamed

Not knowing the specifics of file management for FCP, I recently recorded some material using a JVC camera that stores on SD cards, then moved the files onto my laptop. Directory structure was maintained, except I mistakenly changed the name of the top most directory, thinking this would help keep track of them. FCP 7.0.2 has given me a “General Error” message when trying to import these files. Thinking I could restore what was changed, I looked inside one of the associated XML files and found a directory name that I think was the changed one. I renamed this directory again, and now FCP gives me a “File error: 1 file(s) recognized, 0 access denied, 1 unknown” message. They play fine using VLC media player w/ the “treat as a pipe rather than as a file” setting. Any thoughts on how to rescue these files and open them in FCP would be most appreciated.