I used to be able to open *.sql files in my Eclipse text editor. For some reason that stopped working this morning:
Invalid menu handle.
Problems opening an editor... unable to open external editor.
To fix this behavior for ALL files of a certain extension:
Window > Preferences -
... and on the Preferences Tree:
General > Editors > File Associations -
... add your File Type extension, for example *.sql
... and finally add your Associated Editor. I chose "internal editors" - "text editor"
You can also change the behavior "temporarily" for a single file. Right click the file, click "Open With..." and select the editor...
