On MAC u can try this.
Open the Terminal and type:
/applications/guild\ wars\ 2.app/contents/MacOS/cider —use-dos-cwd C:Gw2 -- C:\\GW2\\GW2.exe –assetsrv 93.188.135.37:80
Tell us if this work for u
Edit:
I ried this one and worked for me on mac
/applications/guild\ wars\ 2.app/contents/MacOS/cider —use-dos-cwd C:Gw2 -- C:\\GW2\\GW2.exe –assetsrv 62.154.232.32:80
(edited by Megalokk.4806)