Error while importing SM map into Edda

[Brollyy]

Reported by Loafspell over at Discord.

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.zip stepmania.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