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i downloaded the latest version of xmage recently and got a couple errors one said fatal i think i uninstalled java and reinstalled following the advice of someone else online and now i can start the launcher but when i click launch client i get this error.
Error: could not open `C:\Users\Username\Desktop\java\jre1.8.0_201\lib\amd64\jvm.cfg'
please please help it was my birthday today and after a 10 hour shift i just want to play some magic

Open launcher folder and delete "java" dir. Then run launcher and press update button to download updates for java again. That's fix the error.

where is the launcher folder is that the one with all the text or is it in programs im not good with computers could you run me through it a little bit?

Launcher folder = folder where are you run xmage's luancher. As I can see -- it's "C:\Users\Username\Desktop\"

You must delete folder:
"C:\Users\Username\Desktop\java"