Francois,
I have opened the message to SAP with that issue. They said that it is SUM's bug (during update of SAP system there should not be step to install new services). They provided the new version of file PreComponentDeployModule and asked to overwrite the old one in location: ..\SUM\sdt\config\usecases\modules\ and restart the SUM and SL Controller. I am attaching SAP's response in text file. (cannot update the file though, so can share it with you some other way).
Hope that helps,
Jakub