Its working! For me to get it to work I had to download SQL Server Compact 3.5 SP2 for Windows Desktop which can be found at: microsoft.com/en-us/download/details.aspx?id=5783&WT.mc_id=DOP-MVP-37580
Note: when you first run the .exe, it will extract the needed installers to your specified location, so make it Documents or Desktop or something, then, install the x86 msi first, and then the x64 msi, after that run RCCrewChief V4.3.exe and check if it works!
Great job Rcmax6696!
Edit:
You can find almost all chassis, motor and esc files at: web.archive.org/web/*/http://www.rccrewchief.wrightdesign.ca/*