Sometimes after upgrading your LightSwitch projects containing ComponentOne controls you may get a "Could not load file or assembly" error : This error occurs because there still exists a reference to an older version of C1Silverlight control (chart/olap/flexgrid/etc) in the project. This error can easily be fixed by using one of the following two solutions.
You can easily resolve it by making some changes in the Config.xml file. Following are the steps for this :
If solution1 does not help, please try the following steps :
The required changes are to delete all the entries which contains the version mention in the error from the ExtensionAssemblies tag in the Config.xml . Once you have deleted all the faulty entries, Rebuild the application and now, it should run without any issues. If case both the above two solutions fail, please post on our forums or submit an incident report to our Community team.