Importing with Configuration Packages Error

Albertvh

Hi All
I'm using the above to import from Excel into our NAV 2015 database Build 42603
The error I'm getting
"The type NavOption is unknown." on a Type Code field in the table I'm importing to.
The field I'm trying to import contains a \ in it XXXXX\yyyyyyy
Below the debug screen of Codeunit 8617 where I get the error

Wisa123

That error usually show up if you mess up Key Order in a GET-Statement.
Could you tell, which table youre importing to, and which Field causes the error? Also provide Info if there was any customization done on this table;