KeePass Password Safe

After installation of KeePass 2.03 Alpha, I create a brand new
Database.kdbx file, change the title of the Sample entry (or do other
similar trivial change) , save it and close KeePass. I reopen KeePass, do
File > Open Database.kdbx, enter the password I chose and then get the
message:
"Failed to load the specified file!"
"Index was outside the bounds of the array"
(see screenshot attached)
No matter what I do it won't open the file. Also tried to recreate another
kdbx file in different ways, reinstal KeePass, delete HOMEPATH\Application
Data\KeePass, same thing.
On my other laptop (Windows XP Pro and .NET FX as below), I don't have this
problem, KeePass 2.03 works fine there. Are there any log somewhere I can
look at to identify the issue and fix it?
Platform:
- Windows XP Home
- .NET FX 1.1 (with Hotfix KB928366), 2.0, 3.0