Rescan not finding new items

[simoncn]

MinimServer has found more than one Vorbis comment block in the FLAC file. (For a FLAC file, the tags are contained in a Vorbis comment block.) The FLAC specification does not allow multiple Vorbis comment blocks, so MiinimServer is detecting the error and reporting it instead of trying to guess which comment block is the correct one.

I suggest you report this issue to dBpoweramp support. No tagging program should be creating FLAC files that violate the FLAC specification.