May you receive this error, please create a new profile and be sure that you dont use the old pst file, or follow the next steps.
1. START | SEARCH | ALL FILES AND FOLDERS | SEARCH HIDDEN FILES AND FOLDERS
2. Search for OUTCMD.DAT and EXTEND.DAT and FRMCAHE.DAT
3. Rename all these file (f.e. type Outcmd.old)
4. Restart Outlook

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