I continue to have this problem even after tech support had me rename the file.  I end up clicking on the Request link numerous times, closing and reopening Lacerte, etc. until finally it goes through.  I wonder if the network is just not handling the traffic as well.  I would imagine there is more demand this year due to the pandemic.  I've had more clients want to use this feature this year and I've never had the problem in prior years.  

Good luck!