[Lazarus] Unit checksum changed error

[Sven Barth]

Am 21.01.2019 um 21:27 schrieb Thomas Crone via lazarus:
> When I go To Project/Project Options/Compiler Options/Verbosity and check Show used files (-vu), I get:
>     PlayMusic.pas(56,25) Fatal: Cannot fine Aiff by PlayMusic of the Project Inspector.
>
> With it unchecked, I get the error reported below.
You need to right click on the message window, select Copy -> Copy 
All/Original Messages to Clipboard (or similar, I'm using the IDE in 
German) and paste that somewhere you can read it. There'll be a bunch of 
messages more, but the most important for your case are the messages 
with id 10002 which tells you the paths of each PPU the compiler is loading.

Regards,
Sven