Hi,

I've just spent the last few hours setting up a multi-language website in Umbraco 7 (latest version downloaded via the package manager). I was just making a few final content changes and saved everything. The next thing I was greeted with was an internal server 500 error, the exact message is:

Cannot add duplicate collection entry of type 'mimeMap' with unique key attribute 'fileExtension' set to '.svg'

I scanned the whole solution with Visual Studio and did not find any duplicate keys in any of the other web.configs or indeed in the main one. If I remove the line, I get a new error:

Error running Reader: SQL Statement: SELECT id, domainName FROM umbracoDomains ORDER BY id

Exception: System.Data.SqlServerCe.SqlCeException (0x80004005): The database file may be corrupted. Run the repair utility to check the database file. [ Database name = C:\Inetpub\wwwroot\UmbracoProjects\qstranslations\qstranslations\App_Data\Umbraco.sdf ] at System.Data.SqlServerCe.SqlCeConnection.Open(Boolean silent) at System.Data.SqlServerCe.SqlCeConnection.Open() at SQLCE4Umbraco.SqlCeContextGuardian.EnsureOpenBackgroundConnection(String connectionString) at SQLCE4Umbraco.SqlCeContextGuardian.Open(String connectionString) at SqlCE4Umbraco.SqlCeApplicationBlock.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlCeParameter[] commandParameters)

Which implies that the database is corrupted. How can this happen so easily when I was doing nothing more than editing some content?

This is the second time I have rebuilt this website this morning having encountered a similar problem earlier. Is this a major bug in V7? This is the first commercial website I have been trying to create with the CMS and I'm slightly scared at the moment with regards to the stability and I don't have time to keep recreating websites from scratch and backing up the site every five minutes just in case something goes wrong.

I have tried creating the website both live on my webspace and using my local IIS server. I am getting similar problems in both situations so I do not believe it is a problem with the hosting or my development machine.

Any ideas would be really appreciated.

Many thanks,

Damien