Entities that do not conform to its type cause installation of an "M" image to fail.

The error that is triggered is:
The INSERT statement conflicted with the CHECK constraint “Check_???????1”. The conflict occurred in the database “Repository”, table “?????.???????Table”.
The statement has been terminated.

Having hundreds of entities might make it incredibly hard to find the incorrect entity.

Tracing the installation process with SQL Server profiler resulted in "skipped query" messages. Maybe the settings are not correct. A DBA might find a resolution for tracing.