First things first, please tell me you did not replace the file in the original GameInfo folder. The entire point of Sins mod system is that you do not have to change the default game files. That way if something goes wrong, you can always just disable the mod, rather than reinstall the whole game.
If you are using a mod you made in the mod folder, and you enabled this mod from the options tab of the main menu, what is your checksum? If the checksum is zero, then the game is not finding your changed file, probably because your folders are mispelled (it must be GameInfo, not gameinfo) or you have an extra folder somewhere.
For new modders, it might be easier to just download the reference (already converted) files. This would eliminate any conversion issues.
Also, you do not actually need to convert your modded files back into binary. Sins can run the game files in either text (readable) or binary format; it is just more efficient to run binary. It is not really worth it to convert back to binary unless you plan on making a real mod to release to other people.
