I just understood, because I just discovered that debugging with LuaRT-Studio x64 crashes completely.
I was not at all aware that it did not work, because on my local version it works perfectly!
So many thanks for this bug report, willi64 👍️
This is simply due to the fact that LuaRT-Studio x64 does not contain on GitHub the DLLs compiled in x64 for LuaSec, LuaSocket and OpenSSL, for some obscure reason!
Sincerely sorry for this unfortunate bug 😥
A commit will be pushed up on the LuaRT-Studio x64 branch within a day.