Unable to create directory error message

Every time I press the play button on the minecraft launcher, this error message pops up:

Unable to create directory. ambient4.ogg
Name: ambient4.ogg
URL: http://resources.download.minecraft.net/4a/4a0ce0713583399108fad4698cbe63714fe5898f
Error details: Cannot create a file when that file already exists
Filename on disk: 468b-299d-0954-737d
Path: C:\Users\xxxxx\AppData\Local\Temp\468b-299d-0954-737d
Exists: file