Jean-Pierre,
Why don't you try:
put homepath&"/debugtable1" into nomFich
--> READ FILE THEN WRITE IT BACK
put URL("file:" & nomFich) into tTestMe
put tTestMe into URL("file:" & nomFich)
--> NOW READ IT AGAIN
put URL("file:" & nomFich) into tTestMe2
if tTestMe2 <> tTestMe then beep
Note: If the file is binary, you'll need to use "binfile:" instead of "file:"
HTH,
Chipp