[false+] incorrect version of erl_driver.h

[micheus]

broozar, thanks for the feedback.

- I installed 2.1.5 into the same directory as 1.5.4 without uninstalling it first.

You definitively should not do that.

- My $PATH did not contain anything looking like Erlang.

Erland is the language used to build Wings3D. It's virtual machine (erl.exe/werl.exe) is present in "C:\Program Files\wings3d_2.1.5\bin".

- I do not know what .beams files are

The .beams files are small executables used by Erlang VM (similar to what .jar files are for Java VM)