getScript() and data uri base64 giving net::ERR_INVALID_URL

Question

I have some code that is encrypted, so I use AES and Base64

var encrypted = "(some aes encrypted base 64 encrypted data uri)"
var decrypted = CryptoJS.AES.decrypt(encrypted, "(key)");
var decstring = decrypted.toString(CryptoJS.enc.Utf8);
$.getScript( decstring, function() {
    console.log( "Script was succesfully decrypted." );
    call();
});

When i try this in a browser it says

net::ERR_INVALID_URL

I go and see the url given and it contains an extra ?_=1483692592022 which ruins the data URI. I go in the console and the value of my decstring variable is without the extra bit at the end, and every time I refresh the number changes. This is very annoying, somebody please help me.