Application errors after logging into a 2k3 server

[coppermine18]

A company installed a 3rd party piece of software on our server, which it works fine on.

We installed a windows XP pro standalone system which IS NOT joined to the domain. It seems that the application runs fine when the computer has not accessed the server.

If you access the server (windows 2003 standard), entering a username and password for directory access, all of a sudden the application will not work on the XP machine like the server effected it.

The error generated is:

The expression On Click you entered as the event property setting produced the following error: Function isn't available in expressions in query expression 'Date()-[inventoryDate]'

NEW- I also cannot access the local Application log on the WinXP Pro machine now... It says that 'Access is denied'