unable to check out

I am trying to set up a store with paypal as the only payment method.

When I check out, if I am logged in I get "Please select a payment method" otherwise no visible content.

In either case, there is code for a form:

form action="/drupal/?q=cart/checkout" method="post">
<input type="hidden" name="edit[nid_9]" value="1" />
<input type="hidden" name="edit[screen]" value="0" />
<input type="hidden" name="edit[subtotal]" value="50" />
<input type="hidden" name="edit[shippable]" value="" />
<input type="hidden" name="edit[shipping_cost]" value="0" />
<input type="hidden" name="edit[gross]" value="50" />
<input type="hidden" name="edit[validate]" value="1" />
<input type="hidden" name="edit[pass_array]" value="a:1:{s:5:&quot;items&quot;;a:1:{i:9;O:8:&quot;stdClass&quot;:14:{s:9:&quot;cookie_id&quot;;s:1:&quot;1&quot;;s:3:&quot;nid&quot;;s:1:&quot;9&quot;;s:3:&quot;qty&quot;;s:1:&quot;1&quot;;s:7:&quot;changed&quot;;s:10:&quot;1123178121&quot;;s:4:&quot;data&quot;;s:6:&quot;a:0:{}&quot;;s:3:&quot;sku&quot;;s:0:&quot;&quot;;s:5:&quot;price&quot;;s:5:&quot;50.00&quot;;s:12:&quot;is_recurring&quot;;s:1:&quot;0&quot;;s:14:&quot;price_interval&quot;;s:1:&quot;0&quot;;s:10:&quot;price_unit&quot;;s:0:&quot;&quot;;s:11:&quot;price_cycle&quot;;s:1:&quot;0&quot;;s:11:&quot;auto_charge&quot;;s:1:&quot;0&quot;;s:5:&quot;ptype&quot;;s:7:&quot;generic&quot;;s:14:&quot;hide_cart_link&quot;;s:1:&quot;0&quot;;}}}" />
/form>

ideas?