I just looked at the source code and I was really surprised to see it’s in Basic.
I’ve never actually seen someone write a graphical tool in Basic before.
I assume from the name of the .dll it’s using Blitz Basic.
It was created in 1964 and later became very popular when it was used on home-computers (typically the kind that were just a keyboard that plugs into the television).
@Cody17 I have an Excel spreadsheet that will allow you to create sprites up to 56 x 32. As they are just formulas, you could extend it to be bigger if necessary.
You deisgn what you want into the cells and it calculates the data array. Good thing with Excel is that you can use all of the standard cut and paste tools!
It actually appears to be a known bug in Excel 2007.
I found this place discussing a potential fix.
Microsof support gives the same advice, as well as an explanation of why Dynamic Data Exchange (DDE) might cause that issue, and an alternate fix if you’re on Windows 8.