Hi ! I managed to get koreader working through patch.lua on my Boris reader (Argentinian Onyx c67ml rebranded) but I can't open any djvu file with error 'no reader engine for this file'. There are no not ascii character in the path (I checked). The reader runs Android 4.2.2 with Play Services. I'm running latest nightly version but I tested with stable and a previous nightly with no success.
How can I get a log ? If you give me the adb command I will manage to run it (never coded on android). Would love to use it as my main reader after years of using kindlepdfviewer.

Update: I got this
I/luajit-launcher( 1241): # opening file /mnt/sdcard/Books/Physics/FT2/Libros/Sakurai J.J.-Modern Quantum Mechanics (1993).djvu
I/luajit-launcher( 1241): # cannot open document /mnt/sdcard/Books/Physics/FT2/Libros/Sakurai J.J.-Modern Quantum Mechanics (1993).djvu frontend/document/djvudocument.lua:30: module 'libs/libkoreader-djvu' not found:
I/luajit-launcher( 1241): no field package.preload['libs/libkoreader-djvu']
I/luajit-launcher( 1241): no file 'libs/libkoreader-djvu.lua' (checked with asset loader)
I/luajit-launcher( 1241): no file 'common/libs/libkoreader-djvu.lua'
I/luajit-launcher( 1241): no file 'rocks/share/lua/5.1/libs/libkoreader-djvu.lua'
I/luajit-launcher( 1241): no file 'frontend/libs/libkoreader-djvu.lua'
I/luajit-launcher( 1241): no file 'libs/libkoreader-djvu.lua'
I/luajit-launcher( 1241): no file '/data/data/org.koreader.launcher/files/libs/libkoreader-djvu.lua'
I/luajit-launcher( 1241): no file 'common/libs/libkoreader-djvu.so'
I/luajit-launcher( 1241): no file 'common/libs/libkoreader-djvu.dll'
I/luajit-launcher( 1241): no file '/usr/lib/lua/libs/libkoreader-djvu.so'
I/luajit-launcher( 1241): no file 'rocks/lib/lua/5.1/libs/libkoreader-djvu.so'
I/luajit-launcher( 1241): no file 'libs/libkoreader-djvu.so'
I/luajit-launcher( 1241): no file '/data/data/org.koreader.launcher/files/libs/libkoreader-djvu.so'
I/luajit-launcher( 1241): # show widget

How can I provide more info ?