I have many problems when installing. Some objects, while having the same palette/resolution as others do not want to get in. Error counter 12. I get in a wall, then when I create a mirror image of it, it gives error in install.

Edit: on same object 224x192 works. 224x160 create error. Any ideas why?

I would really love to know the mechanics of the tool.

Any chances that we can get inside an object when Update.exe refused it?

How come that 101.png is accepted and 102.png is giving error. its just the same wall, but different oriented...On 80 objects it accepted maybe 15. Disappointing.

Moreover, I extracted bmp from existing defs and recompiled them without changing anything. Got again errors when install.