Issue found in pgAdmin 1.14.2, Windows 7
How to reproduce:
1. create some text file and save it without suffix - make sure OS
doesn't hide suffixes making you think that there is no suffix in a filename
2. Open query editor window
3. Select File / Open...
4. Enter star character (*) into filename field and commit it hitting
enter - in result you will get all files listed in file browser
5. find your file
6. select it and open it - this operation will end up with error: "can't
open file"