VPN error message: PARAMETER PINBUF IS NOT VALID

When you attempt to start a connection, you get a message that says, PARAMETER PINBUF IS NOT VALID...

Symptom:
When you attempt to start a connection, a message similar to the following appears:
VPN error message: PARAMETER PINBUF IS NOT VALID
Possible resolution:
This happens when your system is set to use certain locales to which lowercase letters do not map correctly. To fix this error, either make sure that all objects use only uppercase letters, or change the locale of the system.