trying to convert an sm file i used for mapping but Edda seems to fail to import the note data correctly: it ends up as 0 notes but imported audio in Edda
tested 1.2.3 and 1.2.4, both gave the same result
here's the .sm file i made and the corresponding output in edda
edda.zipstepmania.zip
i think i found the bug
oh wait turns out the program shits itself if you try importing ssc files despite Edda telling you it supports them
After initial investigation, there are two issues here:
The notes don't import because the only BPM in the SM file is set at beat 0 and there's a positive offset - in this case the start of this BPM change falls on negative Ragnarock global beat and is completely skipped by converter.
For SSC file, CREDIT tag in the header is empty and there's no CREDIT tag on the chart, which causes the error seen on the screenshot - we should just leave Mapper empty in this case, not fail the whole conversion process.
Reported by Loafspell over at Discord.