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reset your preferences -
adobe media encoder: https://forums.adobe.com/thread/1713540
after effects: http://helpx.adobe.com/after-effects/using/preferences.html
muse (mac): https://forums.adobe.com/thread/1246022?tstart=0
if that fails, uninstall, clean (http://www.adobe.com/support/contact/cscleanertool.html) and reinstall
or see if this works for you, Lightroom: Asking for serial number each time it's launched
Thanks! That solved the first problem. I was able to actually open LR5 but now I am getting an error message - problems changing modules. Any ideas?
Thank you thank you thank you!!! The last step finally solved the problem!!!