/auto/home90/fdc09 130: reduce
Loading image file :/usr/local/reduce_open/pslbuild/x86_64-unknown-fedora7/red/reduce.img
Reduce (Free PSL version), 30-Sep-2009 …
*** Function car is compiled. It cannot be traceset.
2: load compact;
***** error in loading package compact or package not found
You are using the PSL-based version so I will see if anybody from that side wishes to comment, however I would certainly expect trace functions to be unhappy if you try to trace very basic things like "car". There may also be trouble if you have some autoloading function, so please load any package before you try to trace anything in it.