Crypto.js decrypt with key and iv (vector) in byte arrays

I ended up using a .net ashx generic handler, to which i post the data over ssl, and the server-side decryption takes place using the simpleAES class. This class uses block-size as a parameter which seems to make the difference and using this approach I was able to decrypt all the strings i needed to.

More info about simpleAES here: https://github.com/huanlin/YetAnotherLibrary/blob/master/Source/Yalib/Cryptography/SimpleAes.cs

Thanks again for the help!