I'm aware of that and as stated all versions of true or false return the same error 
'TRUE'
'FALSE'
'true'
'false'
0
1

[download]
all fail

In reply to Re^2: Error with MP3 tags: Writing of ID3v2.4 is not fully supported (prohibited now via `write_v24'). by rupert160
in thread Error with MP3 tags: Writing of ID3v2.4 is not fully supported (prohibited now via `write_v24'). by rupert160

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