Can you be more specific about your error?

The zip file checks out okay on the server, and I can download it.

 $ unzip -t istaria-384.4.zip
Archive:  istaria-384.4.zip
    testing: istaria.exe              OK
    testing: resources/               OK
    testing: resources/DefClassMeta.def   OK
    testing: resources/ResourceMeta.def   OK
    testing: packages/                OK
    testing: packages/definitions.lzi   OK
    testing: packages/definitions.lzp   OK
    testing: packages/entities.lzi    OK
    testing: packages/entities.lzp    OK
    testing: packages/terrain.lzi     OK
    testing: packages/terrain.lzp     OK
    testing: packages/terrainlod.lzi   OK
    testing: packages/terrainlod.lzp   OK
    testing: version_info/            OK
    testing: version_info/master_file_list   OK
    testing: version_info/version.txt   OK
No errors detected in compressed data of istaria-384.4.zip.

it just says that the file is corrupetd...and the only file I can even see in it is istaria.exe

I just tried downloading it from another compter...same problem.  It says that it is not a valid archive.

is there any other place I can download the file?

I've just tried and it works fine also by my side.

Looks like the browser doesn't reach the end of the download or something like that.

Can you please make a right click on the zip file (downloaded and saved on your computer),and then tell us the size of the file on the disk ?

Also, with what program the zip archive is opened ? 

Will do so tonight when I get home.

Ok...it wouldn't download correctly when I used Internet Explorer, but it downloaded perfectly using Chrome.  Go Fig.