NEW STRANGE PERMISSION ERROR reported as IMPUT/OUTPUT error

Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8571.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8572.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8573.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8574.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8575.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8576.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8577.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8578.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8579.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8580.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8584.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8585.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8586.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8587.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8588.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8589.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8590.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8591.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8593.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8594.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8595.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8597.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8598.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8599.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8600.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8601.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8602.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8604.ht ml
Errore apertura 5: "Input/output error" su Library/Documentation/Help/MacHelp.help/Contents/Resources/ko.lproj/pgs/8605.ht ml

I have the file MacHelp.help in the reported position under Harddisk Lbrary (and not in Library of user's Account - mine Folder Help is empty).
During the Repair of permission the Mac freezes while checking these part and later resumes.
The Mac is working without apparent problems.
Any suggestion ???

THANKS

Message was edited by: WALTER-MILANO-ITALY
Forgot to say that the file MacHelp.help is reported by Finder to be a Final Cut Express file. It opens and happens to be a general help file for Mac with links to other Help