While installing GBM on windows vista, during the installation the following error occurs with the message:
"Internal Error: Failed to expand shell folder constant "userdocs" following " Setup was not completed. Please correct the problem and run Setup again"
This problem is caused from a vista conflict.
Set the folder "my documents" to its default values.
Right click on my documents folder in explorer or the desktop > select properties from the menu that appears > Select the option for returning the position to its default value.
C:\Documents and settings > All Users Documents > under properties you will see attributes and the settings for "read only"
Setting back the default value for "My documents" is just a workaround, which usually fixes the default read/write rights for the "My Documents" folder.
GBM 7 and above