Running the 6.4.1 IDE on Windows XP64 is not officially supported. However it can be installed by starting the installer from the command line and add the following option:
-W beanCheckSupportedOSType.active="False"
This will disable the OS check and allow the installation on unsupported Windows versions. Unsupported means that the combination has not been officially tested by QNX.
NOTE:
This entry has been validated against the SDP version listed above. Use
caution when considering this advice for any other SDP version. For
supported releases, please reach out to QNX Technical Support if you have any questions/concerns.