it seems like the installers of all LLTX versions for FSX/SE/P3D 2.5 and P3D V3 where broken by the P3D V4 update. Sorry about that, but I couldn't have noticed on my end as on my devel system all files are always present.
I have updated LLTX to version number 1.02 b6 on the DOWNLOAD page
When using MT6, UT2 or WOAI you may have to delete "C:\Users\...\Documents\LorbyLiveTraffic_xxx Files"
so the update can create new databases. But please try the app first, if you don't have or had problems, you don't have to.do this.