Pretty strange. I think the first thing to do is start looking at
the type of PST (Unicode or ANSI).

If the client is using cached mode, have you tried deleting the
OST file and re-opening Outlook to have it rebuild a fresh,
possibly non-corrupted one?

I would look into a possible synchronization problem or a corrupt
OST file. You could try renaming the OST file with a .OLD extension.
(This is to preserve the info, just in case) This needs to be done while
Outlook is closed. Then when you open Outlook it will rebuild the
OST file fresh. Depending on the size of the mailbox, it could take
a bit of time for Outlook to build a new one.

1.. Quit Outlook.
2.. Search the Hard drive (F3) to locate the *.ost file.
(Be sure to check in HIDDEN files on W2K or WXP.)
3.. Delete all that are found from the FIND window.
4.. Open Outlook.

Deleting the Forms Cache File:
The Frmcache.dat file is the primary file to delete. The Frmcache.dat
file serves as an index of the individual forms that have been cached
on the computer. Use the following steps to manually delete the
Frmcache.dat file. In addition, these steps delete all of the cached
forms on your computer, which are stored in subfolders of the
Forms folder.

1.. Quit Outlook.
2.. Search the Hard drive (F3) to locate the Frmcache.dat file.
(Be sure to check in HIDDEN files on W2K or WXP.)
3.. Delete all that are found from the FIND window.
4.. Open Outlook.

When you restart Outlook, and use a form, the forms cache
is re-created.

Then Use the Command-Line Switches below to Open:

Outlook Switch:
- /CleanViews
- /ResetNavPane
-/CleanProfile

Instructions for Outlook 2007

See the following link for information on how to use
this switch VERY EASY:
http://office.microsoft.com/en-us/ou...185891033.aspx

When you create a new profile, did you:

- Click Start, and click Control Panel. Click Mail icon.
(If you use VISTA select the Classic View to see the
MAIL applet)
- Click Show Profiles
- Delete the profile currently being used.
- Click Add and type the new profile name as you like in the
Profile name box.
- VERY IMPORTANT: Do NOT use the same name as
your original profile. Example: If it was "outlook" then use "John" or
whatever, just not outlook again.
- Click Next and click Finish.
- Try to open Outlook. Choose the new profile in the
profile list and click OK.

Outlook builds many files that are used by the client and they are
named based on the profile name (outlook.xml, etc.). Just deleting
the Outlook Profile does not remove these residual files. By renaming
the profile a completely different name, you avoid using a corrupt file
that is still on the machine.

Nikki

"Luke" wrote in message
...
Hi,
I have a user with Outlook 2007 connecting to an Exchange 2007 server with a
PST file for storage (mail delivery is to the mailbox).

Anyway, if I set up a new profile with just the Exchange mailbox in it, I
can open the calendar fine. If I open the users PST file in that same
profile, I can click on the calendar in that set of folders and it will also
open fine. However if I then try to go back into the mailbox calendar,
Outlook will freeze up and I have to end task.

Basically what I can determine is that there's no problem with the mailbox
calendar or the PST calendar, but when they are both in a single profile, it
causes outlook to crash when looking at the mailbox calendar.

Had a look around on line and couldn't find anything.

Thanks in advance!