Properties and other dialogs failing in SSMS

Error Message in SSMS



TITLE: Microsoft SQL Server Management Studio
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Cannot show requested dialog.
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ADDITIONAL INFORMATION:

Cannot show requested dialog. (SqlMgmt)

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There is no row at position 0. (System.Data)



Problem is to do with system table spt_values being deleted.

Run this script to repair - the location may be different on your server.
C:\Program Files\Microsoft SQL Server\MSSQL\MSSQL.1\install\u_tables.sql