Use the built in uc_product_types function

Yes, please. I need uc_hotel to get alone with your module.

My working version:

// get all node types that are registered by ubercart
function _uc_product_node_types() {
  $node_types = uc_product_types('types');
  $product_types = array();
  foreach ($node_types as $n) {
    $product_types[$n] = $n;
  }

  return $product_types;
}

Crazy Joker, where should I put this code to make it workign?

Replace function _uc_product_node_types (lines from 139 to 147) in the module yml_export.module.
Dont't copy and paste "<?php" and "?>" tags.

fixed in latest dev (by removing the function at all), thanks

I can confirm it is working now. Thank you