[erlang-questions] Why do I have to recompile erl files

[Donald Steven]

When I take my work from my desktop to my laptop I have to recompile 
some erl modules or I get an error (even though the beam files are 
present and where they need to be and they're both modern Intel Windows 
machines).  What's going on?


Thanks.


Don


PS: I do use the WIndows Linux subsystem, but both computers are up to 
date so I don' think there is any difference there either.