i have had a reocurr problem with Lightroom classic with the sliders not working in the develop mode. As well I have limited capacity in the library mode to look for photos using a star rating. I cannot search by star rating. I have called tech support three times and each time it has been fixed but the fixes last only one or two days. I have updated both my windows and lightroom. I have windows 10. The tech support guys have deletd the preferences file which seems to work but not for long. It is the weekend and I am not sure where to go from here. Really could use any insight you may have.