Connection to database repository fails with 'Failure loading serialized project as resource'

When trying to connect to a versioned (BVS) database repository in a rule service deployment I'm getting the following error:

com.blazesoft.template.repository.NdRomConnectionException: Could not get ROM configuration from repository 'DDBlaze'.

Could not get ROM configuration from repository 'DDBlaze'.

Failure loading serialized project as resource

Do you have any guess on what is the problem?

Thanks.

That's how my .server configuration looks like:

<RulesProjectInnovatorLoaderFactory>

<InnovatorRepositoryAccessorFactory>

<JavaName>

com.blazesoft.server.innovator.NdInnovatorJdbcRepositoryAccessor

</JavaName>

<JavaMethodArg>

com.blazesoft.repository.jdbc.NdJdbcRepository

</JavaMethodArg>

<JavaMethodArg>com.microsoft.sqlserver.jdbc.SQLServerDriver</JavaMethodArg>

<JavaMethodArg>jdbc:sqlserver://SERVER:1433;database=DDBlaze</JavaMethodArg>

<JavaMethodArg>SA</JavaMethodArg>

<JavaMethodArg>the_password</JavaMethodArg>

<JavaMethodArg>NdDefaultJdbcRepositoryAccessor</JavaMethodArg>

<JavaMethodArg>DDBlaze</JavaMethodArg>

<JavaMethodArg>DDBlaze</JavaMethodArg>

</InnovatorRepositoryAccessorFactory>

</RulesProjectInnovatorLoaderFactory>