[Emacspeak] Outloud and vowel accent reading

[Francisco Javier Dorado Martínez <javier@xxxxxxxxxxx>]

Hi all,
Since Emacspeak 54.0 I am having issue reading spanish texts
 with Outloud synth.
Reading by word or by line, even with reading buffer with c-u m-e b
Emacspeak doesn't send á, é, í, ó ú characters to Outloud.
Any clue what is happening, Where Can I change this behaviour?
 

Many thanks 
regards and take care
Javier