paypal sandbox processing error-
<p>Over the weekend, our paypal sandbox environment used in our asp.net application  suddenly stopped working. It had begun returning a <code>Could not create SSL/TLS secure channel.</code> error when attempting to simulate a customer charge, on the <code>GetTransactionDetails</code> call (which is after the actual charge occurs). </p>

<p>I thought that perhaps the test API signature expires or something, so I went and reset our test account on the API website, and got new api values. </p>

<p>Now, when attempting to simulate a customer charge, I get a <code>10001 internal exception</code> on <code>DoReferenceTransaction</code>, where the actual charge occurs, and cannot even reproduce the ssl error. </p>

<p>I have verified that the sandbox username, password, and signature are correct, and that the test credit card numbers are valid, and of course that the environment is set to sandbox.</p>

<p>I have also verified that the test account is set up as a verified seller. Did anything change that could cause all these sudden problems?</p>

<p>Our live payments still work, but this greatly affects our testing environment. </p>
