Further to Laurence's note above, we are seeing the vast majority of updates to 5.89 going off without a hitch, but also a few more cases like you describe than we would want to see and we've got a squad actively investigating this now.  To help us determine why some users are impacted and some are not, please shoot a note to support@ccleaner.com with something like "5.89 crash" or similar in the subject line so that we can pull it out of the queue for prompt attention. In your email, pleas