Indeed, quite odd. Well, you can try to redownload the batch file, it could have been corrupted (Although, its a text file, so you can open it in notepad and see)
You could always manually splice the files with copy(Different syntax in 9x):
copy /B PSV0.2.010.Part1+PSV0.2.010.Part2+PSV0.2.010.Part3+PSV0.2.010.Part4+PSV0.2.010.Part5 install.exe /B
Although, it sounds like the problem was with a corrupted part, so use
this tool and check the MD5s against these:
PSV0.2.010.Part1:
598d3de9b925f94f6327bfa4ce45326b
PSV0.2.010.Part2:
3efab6d2eb8bd55f9ef02a6d7029411b
PSV0.2.010.Part3:
a2754a8c024d1a90cbef4db8248db649
PSV0.2.010.Part4:
8ec033d42c7d7667734591671ce44478
PSV0.2.010.Part5:
0a45a48de4761bce7732e8eef0f2aef3
Then just redownload the file that doesn\'t match.