4 Replies Latest reply on Mar 2, 2016 9:40 PM by Linda94705

    Can't delete Preview Cache on LR4 (Mac 10.10.3). Message says it is "in use".

    Linda94705

      I am using LR4 on Mac 10.10.3. My catalogue is on an external HD (iOmega 1TB)   LR shuts down due to "error when reading from preview cache and needs to quit". 

      I have read on previous forums that I need to delete the preview cache.  I have found this folder ( in the same folder as the Lightroom Catalog - the preview cache name ends with Previews.LRDATA.) and put it in the trash.  HOWEVER, it won't delete.  I keep getting the message: "The operation can’t be completed because the item “LR4 catalog on MacBkPro Previews.lrdata” is in use".  HELP!!!