Registry error for MTTF-files when opening Outlook

I get the following error when opening Outlook 2003 (translated from Norwegian):

Error in registry for filetype MTTF;'. The syntax or format of the registry listing is wrong. Check the registry settings and compare the settings for this filetype with other filetypes in the registry.

The only option is to click OK.

When clicking OK a new error message is displayed, where the only difference is the filetype, which has changed from MTTF to MTTA.

These two messages are displayed over and over a couple of time, before it stops and Outlook works, seemingly, fine.

Any ideas on how to get rid of this error?
Who is Participating?
David Johnson, CD, MVPConnect With a Mentor OwnerCommented:
it seems to be because of errors in the .pst file run scanpst.exe on the .pst files (only seems to appear in Norwegian)
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