On Mon, 28 Jan 2008, Peter Robertson wrote: What happened is that we switched to using gzip compression on *.gdt output by default, so what you're seeing in notepad is compressed XML. I suppose we could add a GUI switch to avoid compression. Or you could d/l gunzip or similar and run that on the .gdt file before viewing it. It didn't really occur to me that anyone would want to open *.gdt files in an editor (other than gretl itself). One other option: if you use the "store" command in the gretl console to create a .gdt file, compression is _not_ applied by default; that is done only if the --gzipped option is added. Allin Cottrell