I am having trouble getting the downlaod for MRL opened, and i have tried to open it on my mac as it is the only computer i use, and the download will not open. Ihave tried many different versionsand none of them seem to work.

How can i fix this

please help

thanks

java -version

java version "1.8.0_121"

Java(TM) SE Runtime Environment (build 1.8.0_121-b13)

Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)

grab latest build

Will be 1931 or later...

PUT IN A NEW DIRECTORY !!! 

for example :  
Make a new directory !  <- this is important 
put the new version in a new directory .. like this ..
mkdir /Users/Spahn/Desktop/myrobotlab
mkdir /Users/Spahn/Desktop/myrobotlab/ver1931  <- put the new 1931 version in here .. then 

cd /Users/Spahn/Desktop/myrobotlab/ver1931
java -jar myrobotlab.jar -install    <- if you want to pre-install all the services (will take a while)
java -jar myrobotlab.jar                  <- if you just want to start myrobotlab
 

let us know how it goes...