Cart66 Amazon S3 Download Links Expiring Immediately

I’m working on integrating Cart66 and Amazon’s S3 service. I’ve read Cart66’s Documentation, and have set all the S3 info properly. I then add the bucketname and filename into the product. All seems well.

Until I go to try to click on the download link.

<Error>
<Code>AccessDenied</Code>
<Message>Request has expired</Message>
<RequestId>47C41DB48B91092B</RequestId>
<Expires>2013-09-08T23:37:16Z</Expires>
<HostId>
wxeyvEMJdftqFOYBGQoerA2eTtEMXwUISvQpPtxkRHJWTSNVPBee0OIjIGNjswUk
</HostId>
<ServerTime>2013-09-08T23:39:18Z</ServerTime>
</Error>

That’s what I get every time (although the time changes, obviously). The Expiry Time is always a few minutes before the actual Server Time.

Thus, it’s ALWAYS expired.

I don’t see a place to fix it in Cart66’s settings. Is it a problem with their code, or the way I have my file set up on S3?

I know Cart66 doesn’t really offer support for their lite version, but I will happily upgrade to the full version IF I can get this working, to see that their cart is the one that I want to use.

I appreciate help from anyone – thanks so much in advance!