imexhouse has hit the second empty spaces issue I thought was there...
Good snag, I was almost positive there was two instances of blank spaces needing repair, but had forgotten to post them once I noticed them.
That should be it, only two places I noticed had issues with blank spaces, the rest is good to go for 4.1.18, and 4.1.19. Should all work easily now for anyone adding the mod
.
Although the earlier versions of 4.1 should be good to go, keep in mind there were a lot of bugs in them and they had to have a lot of work, so there may be some slight tweaks in the code, simply look close at it all, and ensure your calls in the code are the same as existing for items such as adding buttons etc.