OS X Yosemite :: Can't Empty Trash / Error Code -43

My problem is that I can't empty my trash, I've tried every solution I've found on the internet, but none of them actually work. When I try to empty it, I get the message that the items are in use, but it is practically impossible, because they are some text files, but with weird extension in the filename's end, for example: 

notes_102_331_2012-(ABC).txt/Zone.Identifier 

There are like 30 files like this, and they are in a folder called "Notes", but every time I try to empty them, I get the message that they are in use, although everything is closed except finder. I've tried to rename the files, but then I get the error code -43. The folder itself can be renamed, but that doesn't work. When I try to move the files to another folder or drive, again: error code -43.

Info:
iMac, OS X Yosemite (10.10.1)