[Sokoboxx] Internal Error: opofile.lua:248: Data header size not right?

[kapfab]

Description

App can't be launched.

Metadata

Key	Value
Title	Sokoboxx
Source URL	https://archive.org/download/3-libjune-05/3LIBJUNE05.iso/library%2Fepocgames%2Frmrboxx%2FRMRBoxx.sis

Details

opofile.lua:248: Data header size not right?
RMRBOXX\SCROLLBAR:0000008C: AE [LoadM] 
stack traceback:
    [C]: in function 'assert'
    opofile.lua:248: in function 'opofile.parseProc'
    opofile.lua:122: in function 'opofile.parseOpo'
    runtime.lua:1174: in method 'loadModule'
    ops.lua:1544: in function 'ops.LoadM'
    runtime.lua:989: in function <runtime.lua:974>
    [C]: in function 'xpcall'
    runtime.lua:1108: in method 'pcallProc'
    runtime.lua:1426: in function 'runtime.runOpo'

[jbmorley]

I could believe this is a failure to load something native...