Sorry about that. Someone else was just reporting a "could not submit UTF-8 message" bug, the same day as you, and I thought this was the same thing. (I didn't read closely).
so there are 2 things here:
1) Your message is not in UTF-8. On inspection, it looks like it is in latin-1 (iso-8859-1). Since you have configured your system as eu_ES.UTF-8, we expect file contents to be in UTF-8.
If you changed your encoding to eu_ES, I think it would expect the encoding to be in latin-1.
2) We should be giving you a nicer error message anyway. At least making it clearer that the file is not in the expected encoding.
Sorry about that. Someone else was just reporting a "could not submit UTF-8 message" bug, the same day as you, and I thought this was the same thing. (I didn't read closely).
so there are 2 things here:
1) Your message is not in UTF-8. On inspection, it looks like it is in latin-1 (iso-8859-1). Since you have configured your system as eu_ES.UTF-8, we expect file contents to be in UTF-8.
If you changed your encoding to eu_ES, I think it would expect the encoding to be in latin-1.
2) We should be giving you a nicer error message anyway. At least making it clearer that the file is not in the expected encoding.