I just found out that CrazyCoder
coded another apps runner (pretty simple and cool!).
Tried that on the latest KT firmware and it worked well.
Now I can launch my CR3 (NOT CrazyCoder's QT version) build again and read FB2 books
More info can be found here on Russian forum
(read the section/chapter "13." there).
Yes, it is based on ixtab
's researchs, so thank you again, ixtab