Unable to install RLCraft mod

[xd_something]

Every time I try to install this mod, I get a message saying it couldn't find a mirror.

[sillydog]

you might need to install a new version of java by going to this https://java.com/en/download/manual.jsp but on internet explorer then choosing windows (assuming you have windows) then choose windows offline 64 bit then go back to technic go into launcher options then choose 2 gb maybe 3 gb then try it again