Seaquel
SQL Server error code

SQL Server error 6541

SQL Server raises error 6541 at severity 16, which marks a problem with the query or data that you can correct.

ALTER ASSEMBLY failed because assembly '%.*ls' has more than one file associated with it. Use ALTER ASSEMBLY DROP FILE to remove extra files.
Msg6541
Severity16
Group6000–6999

Source: Database Engine events and errors