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In a first step you should try to reset the preferences of Photoshop using the steps described here:

https://helpx.adobe.com/photoshop/using/preferences.html#reset-preferences

It's recommended to backup your settings before resetting the preferences.

See here:  https://helpx.adobe.com/photoshop/using/preferences.html#backup-photoshop-preferences

If this doesn't help do a complete and clean reinstallation as @mjphotoinfo mentioned.

Please follow the steps below:

• Backup all personal data, like templates, presets etc.
• Uninstall everything cc including preferences,    https://helpx.adobe.com/creative-cloud/help/uninstall-remove-app.html
• Then uninstall the cc desktop app,    https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html
• Clean your computer of cc files per   http://www.adobe.com/support/contact/cscleanertool.html
• Restart your computer (don't skip this)
• Reinstall the cc desktop app,    https://www.adobe.com/creativecloud/desktop-app.html
• Use the desktop app to install your cc programs/trials
• Restore your personal data.

If you're unable to install the cc desktop app at this stage, use an administrator account (solution 4 here,  https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html)

Okay the thing to try here in my opinion is to uninstall and reinstall within the creative cloud app. If this still isn't working then try the creative cloud removal tool- just google it and use it to remove everything. Then reinstall creative cloud, sign in and install from there. You will need to reinstall any plugins remember. Also don't install the beta version alongside it until you're sure you can get the main version working.