If I open up the window for a Magic Effect and click on the Add button for Papyrus Scripts in the lower right, Creation Kit crashes. Windows gives a message saying "Creation Kit has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." This happens even if I just have Skyrim.esm and a new blank plugin file loaded. Am I missing a step before adding a script? Is clicking that button not the first step?
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I also had Steam validate my files, and it didn't download anything when it finished.