Impossible to leave the "currencies" textarea empty to allow all available currencies to be used

Great module. That's really useful. Thanks.

Same as jo1ene point out I get the following errors when trying to configure a money field:

* The currency is not a valid currency.
* The default value is invalid.

At the bottom of the page the text area for "Currencies:" is empty and highlighted in red.
Under this text area we can read "...Leave empty to allow all currencies." If I fill the field "Currencies:" it work fine but if I leave it empty it returned the above errors. It would be useful to leave it empty to allow/show all currencies.

I'm using a fresh install of Drupal 5.7 and fallowed the instruction.

Cheers,