We are creating a custom module that is based on the Product Catalog example from the SDK. We have modified the example slightly to meet our needs (renamed some items, commented out some others).
The module installs OK, and we are able to enter the back-end page to add a new item without any errors. When we fill out the form for adding a new item, and then choose to "Publish" (or "Save as Draft"), we get an overlay/dialog that says:
Unsupported language "". If you want to support this language, please configure your application accordingly.
We have multiple languages configured, which is working with the core Sitefinity system.
We can't find where in the code this message is being displayed. Can somebody provide some ideas on where to look to start trouble-shooting? We have tried stepping through most of the module code, but this appears to be a dynamic client-side message that does not seem to live within the module code anywhere.
We are fully aware that it may be something we did to the Products module code that is causing this error, but we have no idea where to start. Resetting back to vanilla Products code and starting over would be very time-consuming, so any help on targeting troubleshooting would be awesome.
Thank you for any insight!