I tried with numerous abc files, even ones created in and exported directly from Sculptron itself. Sculptron imports the abc files fine but after saving the scene with the imported alembic, Sculptron crashes trying to open the saved file.
I can upload files if necessary but should be reproducible just by adding a Torid starter object, exporting it as alembic, creating a new blank Sculptron file and saving the file after importing in the Torid abc. When trying to open this newly saved file with the imported abc, Sculptron will crash.
At least that is what is consistently happening on my system.