When a spreadsheet (Decision table) is imported into a Guvnor package containing a Model with several classes with the same name in different packages and that classes are not used in the spreadsheet rules, the package is not validated.
The error messages are : "Rule Compilation error The import package.class collides with another import statement".
Example with a model with 2 classes : a.b.c.Car and x.y.z.Car lead to the same problem.
As described in GUVNOR-1456 marked as "resolved" since the 5.3.0-Beta1 version
I'm using the 5.5.0-Final version of Guvnor and i still have the same problem as GUVNOR-1456.