Maybe the updated file had not propagated to the server nearest you yet, or your ISP cached the corrupt file?

I used the freeware program Hash to create checksum values for the Vault install files, which can be used to verify the integrity.

(checksum values)
File: DragonCommander.exe
Size: 8251228 bytes
Modified: August-09-13, 12:40:30 AM
MD5: 61A422C38E4568CA24F16ADD77D6D7CB
SHA1: E1C016FD314D9DAE69925753FBF2C604E3B0B53C
CRC32: F7912BBF


File: DragonCommander-1.bin
Size: 727748608 bytes
Modified: August-09-13, 12:50:16 AM
MD5: 849547894CA70E5027385C7375F1FE98
SHA1: 59466AAC0764269756CAFF7C2620AFB68F9F8ECB
CRC32: 3E62FBDE


File: DragonCommander-2.bin
Size: 736000000 bytes
Modified: August-09-13, 1:00:15 AM
MD5: A52ABA137D55B1C756FDADD70A397023
SHA1: 08D6EEE43EB6EF253C1D7C7BDB4628AF4CDA57A8
CRC32: 08FE082B


File: DragonCommander-3.bin
Size: 736000000 bytes
Modified: August-09-13, 1:10:13 AM
MD5: C3DD9EA3F18DDE4F2D9D6DDCF9B05D1C
SHA1: BB4CB0F1C91B1184B2E5D6EBC4E77840E3D965DD
CRC32: CDAE7F30


File: DragonCommander-4.bin
Size: 736000000 bytes
Modified: August-09-13, 1:20:10 AM
MD5: 025B3CC7EB77DD4DF187F4EC48315EE7
SHA1: 675A098FB25D1056EF587B4A267AE7FFD9347C69
CRC32: 47CB4A06


File: DragonCommander-5.bin
Size: 736000000 bytes
Modified: August-09-13, 1:30:08 AM
MD5: 8169F078CA5FEE41E2AF588BF000D30B
SHA1: CEB7B22005CA49C194FFCC05DFB689657DA07645
CRC32: 3A28A0C8


File: DragonCommander-6.bin
Size: 736000000 bytes
Modified: August-09-13, 1:40:07 AM
MD5: 9019E9234773E0B216D725C11519A5A9
SHA1: C3777F9A6F154CEDA8CAAA25F8E3DE44F7D016AB
CRC32: 15BD4E2C


File: DragonCommander-7.bin
Size: 736000000 bytes
Modified: August-09-13, 1:50:57 AM
MD5: 9490D9BB7517E3F47F228111A7686B47
SHA1: B713AAAAB13ABEA855F380EC45CC1EC3B9FF604D
CRC32: 2FE4367B


File: DragonCommander-8.bin
Size: 736000000 bytes
Modified: August-09-13, 2:00:55 AM
MD5: 6538939987A2A40C1FDBB59B88F9F54A
SHA1: 75838E5614EED75C1F5B661D987FF08E09FFA0A5
CRC32: DEAFC9E1


File: DragonCommander-9.bin
Size: 736000000 bytes
Modified: August-09-13, 2:10:53 AM
MD5: 44A86B6CC20206F93EE481ACDD188EA5
SHA1: F8439575E2F34BB8C50E56B4C2B4B91CAFA17295
CRC32: A0D07A2B


File: DragonCommander-10.bin
Size: 736000000 bytes
Modified: August-09-13, 2:20:52 AM
MD5: B34B911598BEE6F90A956608F30FE967
SHA1: 149816CDEFFBBAFDDFAE52D3A5DF7262C1C03F79
CRC32: 51A852AB


File: DragonCommander-11.bin
Size: 736000000 bytes
Modified: August-09-13, 2:30:50 AM
MD5: 474B43102D3ACD265E148E6A9BA43F0E
SHA1: 91DEEB4674D95A663FF02D168C504F56C601D249
CRC32: 9942E6CD


File: DragonCommander-12.bin
Size: 736000000 bytes
Modified: August-09-13, 2:40:47 AM
MD5: 9EFC76BCD3501C3C5EA35D6C9D2B6356
SHA1: FB46A8FE987A952A1F4F11937ED371329EAF9197
CRC32: FFFB90AE


File: DragonCommander-13.bin
Size: 736000000 bytes
Modified: August-09-13, 2:50:46 AM
MD5: 474A83D12A95E7F982F1B7DC9872072F
SHA1: AA08921AA9B33FF2F185AE30ED03F7FFC36A198C
CRC32: 9402C9D6


File: DragonCommander-14.bin
Size: 423137549 bytes
Modified: August-09-13, 2:56:31 AM
MD5: 00FD7707DA55831A1E1D7D726514D92D
SHA1: 5AC5EAFA3C5FB7C7285BB86D004495F33C779717
CRC32: 9C63E415

If the file is corrupt and re-re-downloading it doesn't help, it would be possible to repair the file using QuickPar or ICE ECC, if I create appropriate recovery files.