While updating records in a QB File, using VB .NET, this error came up

Incorrectly built XML from Update Start.

ISAMGetData
    0x002C89D0 [ISAM]
    0x02D92680 [CheckExpenseLine]
    COLUMN: 34 [ExpenseLineAccountRefFullName]
    OFFSET: 0 RawXML: FALSE
    ForceUnoptimized: FALSE
    DoNotMoveToCache: FALSE
    UpdateOptimized: FALSE
    SQL_C_CHAR
    Petty Cash:Petty Cash - BOS
    MAX LENGTH: 160
    LENGTH RETURNED: 27
    NO_ISAM_ERR 00000 00000
ISAMPutData
    0x002C89D0 [ISAM]
    0x02D92680 [CheckExpenseLine]
    COLUMN: 40 [ExpenseLineClassRefFullName]
    SQL_C_CHAR
    100 Sales
    ISAM_BAD_UPD_XML_PUTD S0000 00000 [QODBC] Incorrectly built XML from Update Start.
ISAMGetErrorMessage
    0x002C89D0 [ISAM]
    S0000 00000 [QODBC] Incorrectly built XML from Update Start.
ISAMCloseTable
    0x002C89D0 [ISAM]
    0x02D92680 [CheckExpenseLine]

The SQL Command it stopped on was:

"Update CheckExpenseLine set ExpenseLineClassRefFullName = '100 Sales' where ExpenseLineAccountRefFullName = 'Petty Cash:Petty Cash - BOS'"

I have the Read and Write Version of QODBC.

Thanks,

Nachu.