Here's the report
http://www.bfu-web.de/EN/Publication...ublicationFile
The wording of the crosswind limits in the manuals played a part as they discounted the gusts when they shouldn't have. It was interesting to note that half of the pilots surveyed for the report at the time thought that the crosswind limits were only guidance.
Our Part B has changed since this incident (same a/c type but different airline) with a single value (gusts included) and the statement that the numbers are limits except in unavoidable circumstances.