Error when openin SRO (Normal Client)

I get this error when i open sro.. ive got no idea wtf it is but anyone does? ^^

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Ive tried reinstalling sro, restart comp, turned of anti virus, firewall etc.... nuthing stop this dam error an ive no idea what it is. Any help wud be greatly appreciated xD

Thanks

That error means there is a program running on port 15779 on localhost. Joymax added that check a year or two back to break all of the programs that faked out the client connection.

Here's a view of the check in the latest client (you'll need an unpacked client):
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If you make that JNZ a JMP, it skips the error message. Otherwise, you'll need to free up port 15779 from whatever is using it.