Crashes in Photoshop CC 2017 AND Lightroom CC 2015 on dialog open

reset your preferences -

lightroom: https://helpx.adobe.com/lightroom/help/setting-preferences-lightroom.html

photoshop:  https://forums.adobe.com/thread/375776

Moving to Photoshop

if you successfully reset your preferences and that failed,

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://creative.adobe.com/products/creative-cloud.

if you're unable to install the cc desktop app at this stage, use an administrator account (solution 3 here, https://helpx.adobe.com/creative-cloud/kb/creative-cloud-missing-damaged.html)

use the desktop app to install your cc programs/trials

what error?  do you see an error message?

using a browser that allows popups and cookies,  contact adobe support during pst business hours by clicking here and, when available, click 'still need help', http://helpx.adobe.com/x-productkb/global/service-ccm.html