Description:
The current item has an operand marked as an offset,
but IDA cannot find the offset base in the database.
Possible reason(s):
The database is probably corrupted.
This may occur if the database was corrupted and repaired.
What to do:
Mark the operand again as an offset. Use one of the following
commands:
Convert to offset (DS)
Convert to offset (CS)
Convert to offset by any segment
Convert to offset by any user-specified base