Psy

I recently downloaded my first modpack, and It stopped working after I used it a few times. I tried deleting and then reinstalling it, but it just gave me an error message, telling me that Error installing the Following Pack: Aphmau -Minecraft Diaries + An error occurred while attempting to delete C:\Users\James\AppData\Roaming\.technic\modpacks\tribute-to-aphmau\mods\1.7.10\Baubles-1.7.10-1.0.1.10.jar from the cache. Please check your security settings. The link to the log is https://pastebin.ubuntu.com/24218618/. What do I do?