I don't know if this is a good place to write this but just wanted to help someone if has a problem lika I had.
I looked all over the net and haven't find solution. So I will post solution here.
When I start launcher it said Runtime eroor. Line:1 Syntax eroor
All you have to do is install a newer version of IE. I installed IE8 and now it works.
Someone here said that launcer has internal IE so it helped me to solve the problem. Hopes it helps someone else.
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