Hi dl7749,
I just tested with your conditions
Hello. I got errors while running Win10PESE (2020-03-28 version) on x86 Windows 10 Enterprise LTSC x86 source.
My configuration:
1. Win10PE SE -> Components -> MS Windows Media Player' script was enabled.
2. Win10PE SE -> Images Configuration -> 'BuildClass 2' was selected (the default of 'BuildClass 3' was changed).
3. Other options were not changed.
Works fine to me, I believe your "LTSC" source (or index) do not have Media Player
I put a check & exit line to Media Player Plugin to avoid such failure on your replies.
If,Not,ExistFile,%Target_Prog%\%ProgramFolder%\%ProgramEXE%,Exit,"%ProgramTitle% - File Not Found : %Target_Prog%\%ProgramFolder%\%ProgramEXE% - Your Source (or index %WIMIndex%) do not have \Program Files\Windows Media Player\wmplayer.exe"
Thanks for reporting