Good call - it's so long since we upgraded to 6.2 I'd almost forgotten about this requirement.The reason for this is that JADE 6.2 has been compiled using the Microsoft Visual C++ 2005 SP1 Compiler. Because JADE 6.2 is compiled against Visual Studio 2005 on Windows, it requires the Microsoft C++ 2005 SP1 Redistributable Package (x86) called vcredist_x86.exe to be installed.
For what it's worth we took this approach and advised our clients to pre-install this on their servers and all presentation client machines prior to upgrading to the first 6.2 based release of our product.
Cheers,
BeeJay.