Thanks for the answer, but it didn't help.
Using your nick had the same result: no list of bookmarklists.
Adding my bml_guid to the url shortened the list of selected caches to 0. I'm sure that the two caches, that are on the bookmarklist, are in the selection without bml_guid.
What I want to do: I'm planning a cache tour and want to check if any of my friends already found some of the caches. So I put all caches on a bookmark list and want to combine this as a filter with the compare-map.