Are you sure this isn't being caused by another mod? I know that it's working in a mostly vanilla modpack, but haven't tested with bobs/angels, shinybobs/angels, or pyanodons, since they are currently in the process of fixing their own errors.
Could you try testing without mini machines, to see if it really is my mod causing the error? I do have some resizing functions that may be trying to modify other mods' incorrect sprite sizes, causing the error again.
Alternatively... the other mod may have already updated, and I haven't fixed compatibility with them. So I might need a modlist if removing mini machines prevents the error.