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for specifc info, attach a screenshot of the error if it's in english. otherwise quote the entire message.
general help: 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
photoshop elements: https://helpx.adobe.com/photoshop-elements/kb/preference-file-locations-photoshop-elements .html, http://www.photokaboom.com/photography/learn/Photoshop_Elements/troubleshooting/1_delete_p references_file.htm
if that fails, uninstall, clean (http://www.adobe.com/support/contact/cscleanertool.html) and reinstall
Thank you for your help. Very much appreciated.