Tyrac, no problem with waiting awhile until the next version. I have found a few errors with 1.7 so far, but nothing that would cause a crash. I have been enjoying playing a battle-free game with the English, but that will change soon when I start playing after I make this post.

Tyrac, don't worry about the cav speeds. They are not big enough that it should impact what units you decide to build. My aim was to give lighter units a little more speed and manuverability, not alter the battlefield significantly. I will try and put the speeds in the spreadsheet for the next version, though, if only to mollify any uncertainties.

The walking speed for light units and mounted archers are unchanged. I only altered the heavy units that I keep close to my infantry so that they don't get out of formation when moving the whole army and get mixed up with the infantry.

I played a number of custom battles to various degrees of completion while making 1.7 in order to see how the new crusader versions looked, as well as adding things to some of the other cavalry units (anyone notice the swords the Sipahi of the Porte hold now?).
Anyway, I never had a crash during this time, though I have not had a campaign battle yet.

I really can't think of anything I did that would cause these crashes, unless it was the changing of cavalry speeds somehow. All the files I deal with are stats and the textures settings which determine how units look on the battlefield. I made all kinds of errors when I first started messing with the textures, and if none of them caused a crash, I can't see how these latest changes did, though I will keep looking for something.

When reporting crashes, list the era, faction, and individual unit types participating.
I found something that I was doing with the Turcoman Horse weapons and didn't finish for some reason. I looked and didn't see anything in my setup that would cause a crash, but your setup may be different. These are the hardest bugs to catch- those that mess up the players that dl the mod, but don't mess up my computer for some reason.