The following steps are neededto place the block to "my site":
- login as administrator
- go to "my side"
- hide courseoverview (the old block)
- go to "main side"
- add new block -> courseoverview +
- configure courseoverview +
- show on all sides
- go to "main side"
- configure courseoverview +
- show on "my side"
Important here is that under no circumstances should both blocks (courseoverview and courseoverview +) be active in the same side, because courseoverview + uses some function of courseoverview that are not considered to be functioning by more than one block.