2437 - Sid Meiers Civilization Revolution (U)(Xenophobia).rar not working?

I was able to download the ROM, but now I can't extract it from the WinRar file.If I try to extract it, the actual DS file opens for a second, as well as something called 'xpa-crev'. The DS file then disappears, and its not in the Recycle Bin. Also a 'WinRAR: Diagnostic messages' pops up. It says that "2437 - Sid Meiers Civilization Revolution (U)(Xenophobia).rar: CRC failed in 2437 - Sid Meiers Civilization Revolution (U)(Xenophobia).nds. The file is corrupt.", as well as "2437 - Sid Meiers Civilization Revolution (U)(Xenophobia).rar: Unexpected end of archive."There are three options at the bottom, being 'Close', 'Break operation', and 'Copy to clipboard'. I've tried them all, except the DS file keeps disappearing, with only the 'xpa-crev' left over. In fact, 'Break operation' and 'Copy to clipboard' don't even do anything. I have to close itAny help? Or at least tell me if it's un-fixable... Thanks

Download it again. Probably got corrupted or it failed near the end and you don't have the full file.

Ah thanks. I'll try that.