Bad file name or number
An error occurred while trying to access the specified file. Among the possible causes for this error are:
A statement refers to a file with a file name or number that was not specified in the FileOpen statement or that was specified in a FileOpen statement but was subsequently closed.
A statement refers to a file with a number that is out of the range of file numbers.
A statement refers to a file name or number that is not valid.
To correct this error
Make sure the file name is specified in a FileOpen statement. Note that if you invoked the FileClose statement without arguments, you may have inadvertently closed all open files.
If your code is generating file numbers algorithmically, make sure the numbers are valid.
Check the file names to make sure they conform to operating system conventions.