Issues with copying files from install

[athenahollow]

I bought Penumbra: Overture in the Humble Indie Bundle today and every time I go to install I get this error:

An error occurred while trying to copy a file:
The source file is corrupted.

on these files:

character_dog_walk.collcach
character_rockworm_base.collcach
character_rockworm_idle.collcach
character_spider_attack.collcach
character_spider_base.collcach
character_spider_death.collcach
character_spider_idle.collcach
character_spider_walk.collcach


I don't know if they are important or not, so I just cancel the install after I click ignore enough to get through those files.
I tried re-downloading the file to no avail. Same issue.

Any advice?

Thanks for your time

-Athena Hollow

[jens]

.collcach files are not important, so it does not matter if those are corrupt. But it is strange that they are corrupt at all, maybe you are running out of space on the drive or something similar?

[athenahollow]

60Gb free at the moment.

WinXP Pro SP3
NTFS file format on eide. Not sure -.-
I will try again after I restart my computer later, but if they aren't important, then no biggie