I found the hard way but it resolves the issue.

unistall the software completely. 

reboot the computer

goto lacerte 24tax folder.  delete everything except data folder.  YOu cannot have old files in the folder left in it.

reboot again

then reinstall the software as fresh and new.  It solves the problem.  

Lacerte won't update in the background nor can you update manually if you have this error.  This is a very critical issue that Lacerte need to resolve it.   Because my other compueters are running ok and able to update newer version .  But not the computer with this error.