Account Maintenance Gremlin

[Brody]

I have two strands of hair left so ANY help would be much appreciated. I have a couple customers who get a 404 error when trying to access their account maintenance menu and order history. Most of my customers can access it completely fine without any errors. I can't find the difference or smoking gun and would appreciate some clues or guidance.

The URL it is "linking" to is: http://www.mydomain/index.php/account-maintenance

Again, most of the time this works, but I have a few important customers who this does not work for and results in this message:

404 - Error
You may not be able to visit this page because of:
an out-of-date bookmark/favourite
a search engine that has an out-of-date listing for this site
a mistyped address
you have no access to this page
The requested resource was not found.
An error has occurred while processing your request.
Please try one of the following pages:
Home Page
If difficulties persist, please contact the System Administrator of this site and report the error below..
DateTimeZone::__construct() [datetimezone.--construct]: Unknown or bad timezone (-8)

I am using Joomla 2.5.2 and VM 2.0.14

I should also add, the top tab in Chrome states it as a 500 Error.

[jenkinhill]

If you are getting 500s then check the server error logs for a description of the cause.

[Milbo]

Server problem, or rights managment problem with joomla.