I'm trying since days to submit some image creatives. But most of them 90% are going with errors. I can not figure out which is the rule. For example I submit a simple image: http://marcel.rdscv.ro/b4/728x90_noc.png

And I get the next response:

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <soapenv:Body> <soapenv:Fault> <faultcode>soapenv:Server.userException</faultcode> <faultstring>This image could not be recognized. </faultstring><detail> <ns1:codexmlns:ns1="https://adwords.google.com/api/adwords/v2">59</ns1:code> <ns2:message xmlns:ns2="https://adwords.google.com/api/adwords/v2">This image could not be recognized. </ns2:message> <ns3:trigger xmlns:ns3="https://adwords.google.com/api/adwords/v2">728x90_noc.png</ns3:trigger></detail></soapenv:Fault></soapenv:Body></soapenv:Envelope>

What suppose to means? Format invalid? Brakes the policies rules? What elese?

If you wont help, who will ?