MP3 output error

[mmssofter]

Demucs-Gui works absolutely fine when outputting wav or flac, but if MP3 is selected for output, the separation process won't start.

In the demucs_gui_log.log the following entries are recorded whenever MP3 output is selected and the "Start Separation" button is clicked...

2024-05-04 14:03:36,170 (shared.py) (Line 245) [DEBUG] : (switchEncoder) Set history ('encoder',) to 1
Traceback (most recent call last):
File "GuiMain.py", line 1922, in startSeparation
AttributeError: 'ExpandingQPlainTextEdit' object has no attribute 'text'

Notes:
The default MP3 command line is displayed... ffmpeg -y -v level+warning -i - -c:a libmp3lame -b:a 320k {output}
FFMpeg appears to be recognised/used by Demucs_Gui, according to the demucs log.
MP3 input files can be successfully separated into WAV or FLAC stems.

Any help/advice would be appreciated.

[CarlGao4]

Found issue. Will be fixed in the next release.

[mmssofter]

Excellent, thank you.

[CarlGao4]

Please try 1.2b1

[mmssofter]

Many thanks, MP3 output is now fully working in 1.2b1