error.txt is for Hotspot errors
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For changing UM errors,you must change login page
using java-script code
copy this instead error in logging page in $(error)
$(if error)<br /><div style="color: #FF8080; font-size: 9px">$(error)</div>$(endif)
---------------------------------
<script type="text/javascript">
var error = "$(error)";
if (error == "simultaneous session limit reached") {
document.write("Equal Your language Error ");
}
else if (error == "invalid password") {
document.write("Equal Your language Error");
}
else if (error == "no valid profile found") {
document.write("Equal Your language Error");
}
else if(error.search("not found") != -1) {
document.write("Equal Your language Error");
}
else document.write("$(error)<br />")
</script>