If you had Photoshop CC 14.2.1 installed and installed Photoshop CC 2014. You should have the two version installed on you machine they are independent. Photoshop CC 14.2.1 is Photoshop version 14 and Photoshop CC 2014 is Photoshop version 15
The logic board on my computer failed. As result I have a new computer and had to reinstall all the CC apps again.I don't have the previous version availabe in the CC apps.