I just used an ABAP program to activate the transformations, not thru an open repair request. The error occured twice before I activated it. The first time after the transport, a bunch of cubes were inactive. We tried a reimport and some of the cubes that were inactive got activated, but not all. A 2nd reimport did not change anything. We are yet to do a reimport after I activated the transformations. We will do that tomorrow and I will post the result.
The transport log in Dev only shows that the return code is 12 and tells to check the QA system for further information about the error. The failed job names are RDDEXECL (most with that name succeeded but some failed). For the original transport, the error in the corresponding job log in QA system says "Internal session terminated with a runtime error GETWA_NOT_ASSIGNED". For the reimports, the job log says UNCAUGHT_EXCEPTION. Upon checking it further in ST22, it said there was an error trying to activate a transformation. Hope this sheds some light.