if it's Error code 2 while at launcher it could be nod32 deleting your sro_client.exe
in that case you need to add sro_client.exe to nod32's exceptions.
viewtopic.php?f=45&t=110210check that out
btw, each time sro updates you'll have to readd the sro_client.exe to nod32 or it will keep deleting your file. i suggest you just get rid of that bitchy nod32 and get avast. seriously.