Build problem...

Whenever I try to build my game, it tells me:

‘Unity could not move file /(location)/(filename)/’

And an error code. That varies.

I tried different locations and different filenames, but I still get the same error. Also, do I have to build my games to a particular location?

normally not

errors like this are often caused by errorous harddisks or full harddisks or by services that mess in the file access handling, preventing unity from copying it