I/O error for file "C:\windows\temp\fb_sort_z62kv4"
Error while trying to open file.
The data is invalid.

Please can anyone help, have searched the net but cant find solution,

When retrieving records from a table, i get the following error that
stops my project in its tracks. It has happened before and only way to
solve was to zap firebird and reinstall odbc driver for pc++ project.
the file does not even exist so cant be permissions etc.