Access Denied!

It seems that you tried to restore some folder(s)/file(s) from the Trash Can. But do you know that those folders and files are in the Trash Can because they:

1. Did not function.
2. Hard to operate.
3. Below expectation.
4. Dangerous.
5. Just plain hard to understand.

So it's best to left them in the Trash Can where they can do no harm. No worries, they're not permanently deleted, yet. If some of those folders/files are accidently let loose, maybe some of them will hog your system. Some will fill your memory with errors. Some might spreads to your friend's email. Some might make your machine unstable. With that and all the other warnings of possible malfunctions, nightmares, phobias, lunacy; I suggest those folders and files to be left in there, where they can cause no harm to you, me, and the environment.