This thread is resolved. Here is a description of the problem and solution.
Translated Products Fail to Appear. I also get this error "Some taxonomies in your site are forced to be untranslatable. This is causing a problem when you're trying to run a multilingual WooCommerce site."
The error you receive ("Some taxonomies in your site are forced to be untranslatable. This is causing a problem when you're trying to run a multilingual WooCommerce site.") is caused by the fact that all the taxonomies on your site are currently set as "Not Translatable".
They need to be set as "Translatable" and you can do that by following the steps below:
1. Go to your WP Dashboard 2. Go to WPML > Settings 3. Scroll down till you get to the section called "Taxonomies Translation" 4. Set the ones you want as "Translatable" and then click the blue "Save" button
You will also see by scrolling up that from this settings page you can set as "Translatable" many things like "Custom Fields", "Custom Term Meta" or "Post Types".
This is the technical support forum for WPML - the multilingual WordPress plugin.