It appears you have internet because the TTS dialog loads. Do you have an anti-virus or firewall which could be blocking the requests we are doing to get the data to populate the drop lists? Can you try temporarily disabling these to see if it is the issue?
<span class=”handle-sign”>@struitt </span>It’s one called AtlasCloud. It’s not a big or well known one. Everything worked fine until very recently. definitely a bug introduced in a recent version of lectora.