https://forum.piriform.com/topic/51845-ccleaner-5426495-64-bit-crashing/?tab=comments#comment-296463
Maybe a moderator can Pin this post temporally (as it seems to be the only fix at the moment)
Thanks
Try (Siliconman01) post above. It worked for me. Or my post at the bottom of here https://forum.piriform.com/topic/51845-ccleaner-5426495-64-bit-crashing/ (for a screen shot)